<h3><strong>How are PFAS regulations changing, and what role will ion chromatography play in the future of environmental testing?</strong></h3><p>In this episode, &nbsp;David interviews <strong>Jay Gandhi, PhD, </strong>Vertical Markets Manager at <strong>Metrohm USA</strong>, for an in-depth discussion on PFAS analysis, the rise of AOF (Adsorbable Organic Fluorine) testing, and the development of EPA 1621 and ISO 18127 standards.</p><p>With more than 30 years of experience in ion chromatography, Jay shares valuable perspective on how the field has evolved—from early applications and NASA water recovery projects to today’s challenges involving PFAS, TFA, and emerging contaminants.</p><h4><strong>Topics covered in this episode include:</strong></h4><ul><li>What PFAS are and why they matter</li><li>The difference between targeted PFAS methods and AOF analysis</li><li>How combustion ion chromatography works</li><li>Behind the scenes of EPA 1621 and ISO 18127 method development</li><li>Regulatory trends in water, textiles, and food packaging</li><li>TFA analysis using IC-MS and IC-MS/MS</li><li>The future of ion chromatography in environmental labs</li></ul><h3><strong>Video Transcription</strong></h3><p>For more than three decades, Jay Gandhi has worked with ion chromatography (IC), watching the technique expand from a specialized tool for water analysis into an analytical platform used across environmental testing, food and beverage analysis, semiconductor manufacturing, battery applications, and, increasingly, PFAS analysis.</p><p>In an interview for <i>Concentrating on Chromatography</i>, Gandhi discusses his introduction to IC during his work on a NASA Mars exploration project, the emergence of PFAS as a major analytical challenge, and why techniques such as adsorbable organic fluorine (AOF) determination and combustion ion chromatography (CIC) can provide information that targeted LC-MS analysis alone cannot deliver. He also examines the development of standardized methods, sample preparation challenges, and the future role of IC-MS and total fluorine approaches in PFAS monitoring.</p><h4><strong>From NASA to ion chromatography</strong></h4><p>Gandhi's introduction to ion chromatography came through his work as a principal scientist on a NASA Mars exploration project focused on water recovery under zero-gravity conditions. IC played an important role because it enabled researchers to establish the ionic balance of anions and cations in water.</p><p>The technology was used both to investigate micronutrients relevant to agricultural applications and to evaluate water purity for potential astronaut consumption. During approximately three years of this work, Gandhi gained extensive experience with ion chromatography. This ultimately led him deeper into IC instrumentation and, 24 years ago, to joining Metrohm.</p><p>At the beginning of his career, IC was strongly associated with relatively straightforward anion and cation analysis in water. The technique itself had been used for water analysis since the 1970s, but Gandhi has seen its application range expand dramatically.</p><p>Food and beverage testing and environmental analysis became important fields, supported by both direct and indirect detection strategies. More recently, IC has also found applications in areas such as the semiconductor industry and battery recycling.</p><p>In Gandhi's words, ion chromatography has effectively "bloomed" into numerous application areas.</p><h4><strong>PFAS changes the analytical challenge</strong></h4><p>PFAS represent a particularly important chapter in this development. These chemicals have been used for decades in numerous consumer and industrial products, including non-stick materials, firefighting foams, water-resistant textiles and other applications.</p><p>Gandhi recalls work on PFOA and PFOS using ion chromatography with conductivity detection as early as 2008. However, the achievable detection limits were insufficient for the extremely low concentrations that later became important in PFAS analysis.</p><p>A major turning point for him came in 2015, when he encountered research from Sweden using <strong>combustion ion chromatography to investigate total fluorine</strong>. Subsequent collaboration with researchers at Clarkson University and Harvard University, particularly on aqueous film-forming foam (AFFF), further demonstrated the importance of looking beyond individual targeted PFAS compounds.</p><h4><strong>Why targeted LC-MS does not tell the whole story</strong></h4><p>Targeted LC-MS is highly sensitive and selective and can provide detailed information about individual PFAS compounds. However, according to Gandhi, the number of possible PFAS structures in the environment is vastly greater than the number routinely included in targeted methods.</p><p>A targeted method may monitor dozens or perhaps around one hundred compounds, while the overall PFAS universe can include thousands of chemical structures. Consequently, targeted analysis may characterize only a small fraction of the total PFAS burden.</p><p>There are other practical considerations. LC-MS measurements can be affected by matrix-dependent ion suppression, while accurate quantification frequently relies on isotope-labelled internal standards. Such standards are available for only a limited number of compounds and can be expensive.</p><p>This is where measurements of total or adsorbable organic fluorine can provide complementary information. Rather than asking <i>which specific PFAS compounds are present?</i>, these approaches can help answer a broader question: <i>how much fluorine associated with this chemical space is present in the sample?</i></p><h4><strong>AOF as a complementary approach</strong></h4><p>Adsorbable organic fluorine analysis provides a different perspective from targeted LC-MS. In the workflow discussed by Gandhi, organic fluorine compounds are captured during sample preparation and subsequently measured using combustion ion chromatography.</p><p>The principle of CIC builds upon older total organic halogen analysis. The sample is combusted at temperatures above approximately 1,000 °C, breaking carbon-halogen bonds. In PFAS-related analysis, carbon-fluorine bonds are broken and the resulting fluoride is collected in an absorption solution.</p><p>Ion chromatography is then used to separate and quantify the fluoride.</p><p>Replacing older detection approaches with IC provides both sensitivity and selectivity for the halogens being measured. Effective combustion is critical: oxygen supports the combustion process, while a carrier gas transports the products into the absorption solution for subsequent IC analysis.</p><h4><strong>The challenge of inorganic fluoride</strong></h4><p>The broad response of CIC is simultaneously one of its strengths and one of its analytical challenges. Combustion does not distinguish fluorine originating from PFAS from fluorine present in inorganic compounds such as fluoride salts.</p><p>This becomes particularly important when analyzing water containing relatively high concentrations of inorganic fluoride while attempting to quantify organic fluorine at very low levels.</p><p>Sample preparation therefore has a critical role. Inorganic fluoride must be effectively separated from the fraction of interest, while materials used during sample preparation must themselves have sufficiently low fluoride backgrounds.</p><p>Contamination can come from unexpected sources. Gandhi points out that background fluoride may originate not only from reagents and sample preparation materials but potentially from the laboratory environment. Careful blank control, appropriate materials and rigorous evaluation of interferences are therefore essential when moving toward increasingly low detection limits.</p><h4><strong>From research method to international standardization</strong></h4><p>The development of standardized AOF methods illustrates the importance of collaboration between academia, industry, regulatory organizations and analytical laboratories.</p><p>Gandhi describes work that began in Europe around 2015 and subsequently progressed through German standardization activities, ISO development, ASTM-related collaboration and the U.S. EPA. The process eventually contributed to methods such as <strong>EPA Method 1621</strong>.</p><p>He emphasizes that this was not the work of a single scientist or organization. Developing a robust method required years of experiments, discussions and sometimes difficult technical debates among numerous stakeholders.</p><p>For Gandhi, the essential principle was that experimental evidence ultimately had to determine the outcome. Collaboration becomes possible when scientists focus on the data rather than the organizations they represent.</p><h4><strong>PFAS monitoring is moving beyond drinking water</strong></h4><p>Regulatory attention to PFAS is also expanding beyond drinking water. Gandhi describes a broader strategy that begins with reducing the manufacture and use of PFAS-containing materials and continues with removing existing contamination from the environment.</p><p>Wastewater represents an important part of this picture because PFAS can enter it from numerous sources. Historical contamination from landfills and contaminated sites can also migrate into groundwater and ultimately affect drinking-water supplies.</p><p>Consumer products are another area of increasing attention. Food packaging, disposable containers, automotive fabrics, outdoor clothing and water-repellent textiles have historically used fluorinated substances to provide properties such as grease, water or stain resistance.</p><p>Reducing PFAS use in such products could therefore gradually decrease the amount entering waste streams and the wider environment.</p><h4><strong>Screening first, regulation later?</strong></h4><p>Gandhi expects AOF to be particularly valuable as a <strong>screening tool</strong>, providing an estimate of broader fluorine contamination before laboratories proceed to more specific analyses.</p><p>Its importance becomes clear when AOF results are compared with targeted PFAS measurements. Gandhi reports that laboratories working with EPA Method 1621 have observed differences between targeted PFAS results and broader AOF measurements ranging from approximately <strong>300- to 4,000-fold in the total fluorine mass balance</strong>.</p><p>Such discrepancies suggest that targeted methods can leave a substantial portion of fluorine unexplained.</p><p>Rather than competing with LC-MS, AOF and CIC therefore provide complementary information. A broad screening method can reveal the magnitude of total contamination, while targeted mass spectrometry identifies and quantifies specific compounds of interest.</p><h4><strong>Where IC-MS fits into the PFAS toolbox</strong></h4><p>No single technique can cover the entire PFAS problem. Gandhi highlights very short-chain, highly polar fluorinated compounds as another analytical challenge.</p><p>Compounds such as trifluoroacetic acid (TFA) are highly water-soluble and may not be quantitatively retained by the carbon materials used for AOF sample preparation. Direct ion chromatography can provide an alternative route for separating such compounds from common inorganic anions.</p><p>Coupling IC with mass spectrometry adds another level of sensitivity and selectivity. Gandhi therefore sees <strong>IC-MS and IC-MS/MS</strong> as increasingly important tools for highly polar fluorinated compounds. Similar approaches can also be useful beyond PFAS, including the determination of polar pesticides such as glyphosate and glufosinate.</p><h4><strong>Toward lower detection limits and more complete PFAS analysis</strong></h4><p>For Gandhi, current standardized methods represent a beginning rather than an endpoint. Improvements in instrumentation and particularly sample preparation could push total fluorine analysis to substantially lower concentrations.</p><p>He notes that current combustion IC configurations can reach approximately <strong>0.5 ppb</strong>, or 500 parts per trillion, and believes that improvements in sample volume, preparation procedures and mitigation of inorganic fluoride backgrounds could eventually move detection below 100 ppt and potentially toward 50 ppt.</p><p>Extractable organic fluorine workflows could provide another bridge between broad fluorine screening and targeted LC-MS methods. Combining improved extraction with CIC could allow samples to be screened for organic fluorine before more detailed compound-specific characterization.</p><p>The broader message from Gandhi's career is that PFAS analysis is unlikely to be solved by a single analytical technique. <strong>Targeted LC-MS provides compound-specific sensitivity and selectivity; AOF and combustion IC reveal a broader fluorine picture; and IC-MS can address highly polar compounds that are difficult to capture using conventional workflows.</strong> Used together, these techniques can provide laboratories with a much more complete understanding of PFAS contamination than any one approach alone.</p><blockquote><p><strong>This text has been automatically transcribed from a video presentation using AI technology. It may contain inaccuracies and is not guaranteed to be 100% correct.</strong></p></blockquote><blockquote><h4><strong>Concentrating on Chromatography Podcast</strong></h4><p>Dive into the frontiers of chromatography, mass spectrometry, and sample preparation with host David Oliva. Each episode features candid conversations with leading researchers, industry innovators, and passionate scientists who are shaping the future of analytical chemistry. From decoding PFAS detection challenges to exploring the latest in AI-assisted liquid chromatography, this show uncovers practical workflows, sustainability breakthroughs, and the real-world impact of separation science. Whether you’re a chromatographer, lab professional, or researcher you'll discover inspiring content!</p><p>You can find <strong>Concentrating on Chromatography Podcast </strong>in podcast apps:</p><ul><li><a target="_blank" rel="noopener noreferrer" href="https://open.spotify.com/show/1wZg67rCjoGju4yhqxI3tL"><strong>Spotify</strong></a></li><li><a target="_blank" rel="noopener noreferrer" href="https://podcasts.apple.com/tz/podcast/concentrating-on-chromatography/id1788429185"><strong>Apple podcast</strong></a></li><li><a target="_blank" rel="noopener noreferrer" href="https://podscan.fm/podcasts/concentrating-on-chromatography"><strong>podscan</strong></a></li></ul><p>and on <a target="_blank" rel="noopener noreferrer" href="https://www.youtube.com/@ChromatographyTalk/videos"><strong>YouTube channel</strong></a></p></blockquote>

The Future of Ion Chromatography | PFAS Testing, EPA 1621 & AOF Explained

<p><strong>In late February 2025, a train carrying benzene derailed in Hustopeče nad Bečvou, and within hours, a race was on to save the groundwater and surface water. One of the most toxic industrial substances began seeping into the gravel-sand subsoil. While fieldwork was underway to prevent the spread of contamination, decisions were already being made in the CXI TUL laboratories regarding how to subsequently clean up the contaminated rock environment.</strong></p><p>The accident ranks among the <strong>most serious environmental incidents in the Czech Republic in recent years</strong>. After a tanker train derailed, hundreds of<strong> metric tons of benzene leaked</strong>; due to the highly permeable geological subsoil, it quickly seeped into deeper soil layers and into the groundwater. The combination of the substance’s high toxicity and local conditions complicated both the emergency response and the subsequent remediation. The key was to stop further spread, determine the extent of the contamination, and establish a remediation strategy for the entire site.</p><p>It was at this stage that CXI TUL became involved in the solution. At the request of the renowned remediation company DEKONTA, a.s., a team led by <strong>RNDr. Jan Němeček, Ph.D.</strong>, began testing the feasibility of the<strong> in situ chemical oxidation (ISCO) method</strong>. This technology is designed to<strong> break down benzene directly within the rock matrix</strong>, without the need for extensive excavation of contaminated soil or the pumping out of large volumes of groundwater. The goal was simple: to find a method that would work quickly, safely, and under the actual conditions of the affected site.</p><h4><strong>Benzene Remediation: Technically Simple, Complicated in Practice</strong></h4><p>Benzene is a highly toxic and carcinogenic substance that rapidly penetrates into groundwater in permeable subsoil, where it dissolves and spreads further as the water flows toward surface water bodies. Benzene also binds to rock particles and migrates in the form of vapors into overlying unconsolidated layers.</p><p>Scientists in Liberec therefore tested <i>in situ </i>chemical oxidation (ISCO) technology under laboratory conditions. The goal was to find an oxidant capable of breaking down benzene directly underground into less hazardous substances.</p><p>The tests evaluated two main options:<strong> activated hydrogen peroxide and sodium peroxodisulfate</strong>. Both substances removed up to<strong> 99.99% of the benzene</strong>, but there was a difference in their kinetics and impacts on the natural environment. Activated hydrogen peroxide achieved nearly complete degradation of the contaminant within a single day. Activated sodium peroxodisulfate was slower and also significantly altered the chemistry of the water; it acidified the environment and increased the sulfate content in the water, which poses an additional environmental burden.</p><p>For field applications, the researchers therefore unequivocally recommended <strong>activated hydrogen peroxide</strong>.</p><h4><strong>Dosage Matters</strong></h4><p>It was not just the oxidant’s effectiveness that was key. It was equally important to determine how the chemical reaction would behave in a real geological environment. The team of scientists therefore also analyzed what is known as <strong>soil oxidant consumption (SOD)</strong>. It turned out that a significant portion of the oxidizing agent does not react solely with benzene but is also consumed to a significant extent by the rock environment itself, particularly by natural organic substances present in the fine-grained fraction of the soil.</p><p>An oxidant consumption value was determined specifically for the local composition of the aquifers, which is essential for the correct dosing of chemicals in the field so that the remediation is not only effective but also economically viable and safe for surrounding ecosystems.</p><h4><strong>One Year After the Accident: Research Turns into Real-World Assistance</strong></h4><p>While the public often perceives university science as a distant world of laboratories and grant projects, it is precisely situations like this that demonstrate its practical impact. The results of the work by researchers at CXI TUL did not remain confined to academic studies but directly influenced decisions regarding the technology used to clean up one of the largest environmental accidents in recent years.</p>

Science on the Front Lines: Cleanup of a Benzene Spill

<p><strong>This study uses ultra-high-performance liquid chromatography–tandem mass spectrometry (UHPLC-MS/MS) lipidomics to characterize plasma lipid alterations associated with long-term aromatase inhibitor therapy in postmenopausal breast cancer patients. A total of 649 lipid species across 23 classes and subclasses were relatively quantified, revealing significant differences in phosphatidylcholines, sphingomyelins, ceramides, hexosylceramides, and other lipid groups.</strong></p><p>Multivariate analysis showed clear group separation, while a Naive Bayes model based on lipid-class profiles achieved an AUC of 0.79. The results indicate that aromatase inhibitor therapy is associated with systematic lipidomic changes linked to estrogen deprivation and sphingolipid metabolism, providing potential mechanistic insight into long-term metabolic effects of treatment.</p><blockquote><h4><strong>The original article</strong></h4><h4><a target="_blank" rel="noopener noreferrer" href="https://www.mdpi.com/1422-0067/27/4/1926"><strong>Aromatase Inhibitor Therapy Is Associated with Distinct Plasma Lipidomic Profiles in Postmenopausal Breast Cancer Patients&nbsp;</strong></a></h4><div><span>Aleksandra Arsic, Ales Kvasnicka</span><a target="_blank" rel="noopener noreferrer" href="https://orcid.org/0000-0001-5973-316X"><span><img></span></a><span>, David Friedecky</span><a target="_blank" rel="noopener noreferrer" href="https://orcid.org/0000-0002-3448-9073"><span><img></span></a><span>, Nebojsa Ivanovic, Maja Milosevic</span><a target="_blank" rel="noopener noreferrer" href="https://orcid.org/0000-0002-0985-0728"><span><img></span></a><span> and Vesna Vucic</span></div><p>Int. J. Mol. Sci. <strong>2026</strong>, 27(4), 1926</p><p><a target="_blank" rel="noopener noreferrer" href="https://doi.org/10.3390/ijms27041926">https://doi.org/10.3390/ijms27041926</a></p><h6>licensed under <a target="_blank" rel="noopener noreferrer" href="https://creativecommons.org/licenses/by/4.0/"><strong>CC-BY 4.0</strong></a></h6></blockquote><p><strong>Selected sections from the article follow. Formats and hyperlinks were adapted from the original.</strong></p><div><div><p>Breast cancer (BRC) is the most common malignancy among women, with over 2.2 million new cases diagnosed globally in 2022 [<a target="_blank" rel="noopener noreferrer" href="https://www.mdpi.com/1422-0067/27/4/1926#B1-ijms-27-01926">1</a>]. A substantial proportion of breast cancers are estrogen receptor-positive (ER+) and/or progesterone receptor-positive (PR+) [<a target="_blank" rel="noopener noreferrer" href="https://www.mdpi.com/1422-0067/27/4/1926#B2-ijms-27-01926">2</a>], necessitating multimodal treatment approaches, including surgery, chemotherapy, radiotherapy, and endocrine therapy. Aromatase inhibitors (AIs) represent the gold-standard adjuvant endocrine treatment for postmenopausal women, as they improve disease control and reduce the risk of distant metastasis by inhibiting peripheral aromatase activity [<a target="_blank" rel="noopener noreferrer" href="https://www.mdpi.com/1422-0067/27/4/1926#B3-ijms-27-01926">3</a>]. This inhibition prevents the conversion of androgenic precursors into estrogens in peripheral tissues, resulting in a marked reduction in systemic estrogen levels. For postmenopausal women with ER+ and PR+ breast tumors, a five-year course of AI therapy, often extended beyond this duration, is recommended to reduce the risk of disease recurrence [<a target="_blank" rel="noopener noreferrer" href="https://www.mdpi.com/1422-0067/27/4/1926#B4-ijms-27-01926">4</a>].</p><p>AIs decrease plasma and tissue concentrations of endogenous estrogens by inhibiting aromatase (cytochrome P450), the rate-limiting enzyme responsible for estrogen biosynthesis from testosterone and adrenal androgens [<a target="_blank" rel="noopener noreferrer" href="https://www.mdpi.com/1422-0067/27/4/1926#B5-ijms-27-01926">5</a>]. Because estrogen plays a protective role in lipid metabolism, AI therapy is frequently associated with dyslipidemia. Increased levels of triglycerides (TG), total cholesterol (TC), and low-density lipoprotein cholesterol (LDL) have been reported in patients receiving AIs [<a target="_blank" rel="noopener noreferrer" href="https://www.mdpi.com/1422-0067/27/4/1926#B6-ijms-27-01926">6</a>], thereby increasing the risk of cardiovascular disease (CVD) in postmenopausal women with BRC [<a target="_blank" rel="noopener noreferrer" href="https://www.mdpi.com/1422-0067/27/4/1926#B7-ijms-27-01926">7</a>].</p><p>Disturbances in lipid metabolism are recognized as a hallmark of cancer, leading to increasing interest in lipidomic profiling as a tool for characterizing tumor-associated metabolic alterations [<a target="_blank" rel="noopener noreferrer" href="https://www.mdpi.com/1422-0067/27/4/1926#B8-ijms-27-01926">8</a>]. In recent years, clinical lipidomics studies have been conducted across multiple malignancies, including lung [<a target="_blank" rel="noopener noreferrer" href="https://www.mdpi.com/1422-0067/27/4/1926#B9-ijms-27-01926">9</a>], pancreatic [<a target="_blank" rel="noopener noreferrer" href="https://www.mdpi.com/1422-0067/27/4/1926#B10-ijms-27-01926">10</a>], renal cell carcinoma [<a target="_blank" rel="noopener noreferrer" href="https://www.mdpi.com/1422-0067/27/4/1926#B11-ijms-27-01926">11</a>], colorectal [<a target="_blank" rel="noopener noreferrer" href="https://www.mdpi.com/1422-0067/27/4/1926#B12-ijms-27-01926">12</a>], and BRC [<a target="_blank" rel="noopener noreferrer" href="https://www.mdpi.com/1422-0067/27/4/1926#B13-ijms-27-01926">13</a>], highlighting cancer-specific lipidomic signatures and the growing relevance of lipid metabolism in oncology. Lipidomic reprogramming is now recognized as a defining feature of BRC. To date, elevated levels of phosphatidylcholine (PC 32:1), stearic acid, and ceramide (Cer 43:1), along with reduced levels of diacylglycerol (DG 34:2), have been reported in BRC patients compared with healthy women [<a target="_blank" rel="noopener noreferrer" href="https://www.mdpi.com/1422-0067/27/4/1926#B14-ijms-27-01926">14</a>]. These lipid species, together with phosphatidylinositol (PI 16:0/16:1) and PI (18:0/20:4), have been proposed as potential biomarkers for BRC [<a target="_blank" rel="noopener noreferrer" href="https://www.mdpi.com/1422-0067/27/4/1926#B14-ijms-27-01926">14</a>].</p><p>Despite these advances, there remains a paucity of studies investigating the lipidomic profiles in BRC patients in relation to endocrine therapy. The present cross-sectional study aims to address this gap by conducting mass spectrometry-based profiling of lipid classes and comparing profiles between postmenopausal BRC patients receiving AI therapy and another cohort assessed before this treatment. This approach aims to characterize associations between AI therapy status and plasma lipidomic patterns.</p><h4><strong>2. Results</strong></h4><h5><strong>2.3. Lipidomic Analysis</strong></h5><p>Plasma lipid profiling identified 649 lipids across 23 lipid classes and subclasses, covering the major structural families of the circulating lipidome, including neutral lipids (triacylglycerols, diacylglycerols, cholesteryl esters, and cholesterol), glycerophospholipids (phosphatidylcholines, phosphatidylethanolamines, phosphatidylinositols, phosphatidylglycerols, phosphatidylserines, and their lysophospholipid counterparts), sphingolipids (sphingomyelins, ceramides, monohexosylceramides, and dihexosylceramides), and free fatty acids. In addition to diacyl phospholipids, the dataset included ether-linked and plasmalogen species (denoted as O- and P-), most prominently within PC, PE, and LPC and LPE classes. An overview of the plasma lipidome is shown as a global lipid network (<a target="_blank" rel="noopener noreferrer" href="https://www.mdpi.com/1422-0067/27/4/1926#fig_body_display_ijms-27-01926-f001">Figure 1</a>). To assess whether the observed lipid changes reflect coordinated remodeling rather than isolated signals, we performed Fisher’s combined probability test at the lipid-class level. This analysis revealed significant cumulative differences in several lipid classes, including Cer, LPC, ether/plasmalogen LPC, LPE, and SM (<a target="_blank" rel="noopener noreferrer" href="https://www.mdpi.com/1422-0067/27/4/1926#fig_body_display_ijms-27-01926-f001">Figure 1</a>), supporting systematic class-level alterations despite limited power at the single-species level.</p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Int_J_Mol_Sci_2026_27_4_1926_Figure_1_Global_lipid_network_analysis_of_plasma_lipidomic_differences_between_breast_cancer_patients_BRC_prior_to_initiation_of_the_aromatase_inhibitor_6f82827773.jpg" alt="Int. J. Mol. Sci. 2026, 27(4), 1926: Figure 1. Global lipid network analysis of plasma lipidomic differences between breast cancer patients (BRC) prior to initiation of the aromatase inhibitor (AI) therapy and patients receiving AI. Cytoscape-based network visualization illustrates lipid species grouped according to structural similarity and lipid class. Each node represents an individual lipid species, while edges indicate class-based relationships. Node size corresponds to the −log10 p-value from the Mann–Whitney U test, reflecting the statistical significance (−log p-Value &gt; 1.3) of differences between groups. Node color indicates the direction and magnitude of change, based on log2 fold change, with red representing higher abundance in AI-treated patients and blue representing higher abundance in patients before AI therapy. Major lipid classes, including glycerophospholipids (GPL), sphingolipids (SP), glycerolipids (GL), fatty acids (FA), and cholesteryl esters (CE), are shown to highlight coordinated class- and species-level lipidomic alterations. Fisher’s combined p-value for individual lipid classes is shown at the bottom (significant p-Value &lt; 0.05). " srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Int_J_Mol_Sci_2026_27_4_1926_Figure_1_Global_lipid_network_analysis_of_plasma_lipidomic_differences_between_breast_cancer_patients_BRC_prior_to_initiation_of_the_aromatase_inhibitor_6f82827773.jpg 245w," sizes="100vw" width="1600" height="847"></p><h5><strong>2.4. Multivariate Analysis of Plasma Lipidomic Profiles</strong></h5><p>Principal component analysis (PCA) and partial least squares discriminant analysis (OPLS-DA) were applied to the lipidomic dataset to assess global variation and group separation between the BRC and AI groups (<a target="_blank" rel="noopener noreferrer" href="https://www.mdpi.com/1422-0067/27/4/1926#fig_body_display_ijms-27-01926-f002">Figure 2</a>). PCA was performed as an unsupervised analysis, including all samples and quality control (QC) samples. The first two principal components explained 37.9% (PC1) and 15.6% (PC2) of the total variance, accounting for 53.5% of the cumulative variance. QC samples clustered tightly near the center of the PCA score plot, indicating analytical stability and reproducibility of the LC–MS measurements. In the PCA score plot, samples from the BRC and AI groups showed partial overlap, with no complete separation observed along the first two principal components. To further evaluate group discrimination, a supervised OPLS-DA model was constructed using the same dataset. The OPLS-DA score plot demonstrated improved separation between the BRC and AI groups along the first latent variable, with group-specific clustering highlighted by confidence ellipses. Permutation testing confirmed that the supervised OPLS-DA model was not overfitted, with a negative Q<sup>2</sup> intercept (Q<sup>2</sup> = −0.55), indicating that permuted models lacked predictive ability compared with the original model (<a target="_blank" rel="noopener noreferrer" href="https://www.mdpi.com/1422-0067/27/4/1926#app1-ijms-27-01926">Supplementary Figure S1</a>). Together, these multivariate analyses indicate differences in lipidomic profiles between the BRC and AI groups, while also demonstrating acceptable analytical performance as evidenced by the clustering of QC samples.</p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Int_J_Mol_Sci_2026_27_4_1926_Figure_2_Multivariate_analysis_of_plasma_lipidomic_profiles_in_breast_cancer_patients_BRC_56f65f265b.jpg" alt="Int. J. Mol. Sci. 2026, 27(4), 1926: Figure 2. Multivariate analysis of plasma lipidomic profiles in breast cancer patients (BRC) prior to initiation of the aromatase inhibitor (AI) therapy and patients receiving AI. Principal component analysis (PCA) score plot (a) shows the distribution of plasma lipidomic profiles from patients before AI therapy (BRC, blue), patients receiving AI therapy (AI, red), and quality control samples (QC, gray). Orthogonal partial least squares–discriminant analysis (OPLS-DA) score plot (b) demonstrates improved separation between BRC and AI groups. The ellipse represents the 95% Hotelling’s T2 confidence interval. " srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Int_J_Mol_Sci_2026_27_4_1926_Figure_2_Multivariate_analysis_of_plasma_lipidomic_profiles_in_breast_cancer_patients_BRC_56f65f265b.jpg 245w," sizes="100vw" width="1600" height="652"></p><h4><strong>4. Materials and Methods</strong></h4><h5><strong>4.5. Lipidomic Analysis</strong></h5><p>Chromatographic separation was performed using an ultra-high-performance liquid chromatography (UHPLC) <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/library?mainauthorItems=55&amp;search=ExionLC"><strong>ExionLC system</strong></a> (SCIEX, Framingham, MA, USA) coupled to a <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/library?mainauthorItems=55&amp;search=6500"><strong>QTRAP<sup>®</sup> 6500+ mass spectrometer </strong></a>(SCIEX, Framingham, MA, USA). Lipids were separated on an <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/1953"><strong>ACQUITY Premier BEH C8 column</strong></a> (100 × 2.1 mm, 1.7 μm; Waters Corporation, Wilmslow, UK). The column temperature was kept at 55 °C, and the autosampler was set to 10 °C. The mobile phases consisted of solvent A (acetonitrile/water, 6:4, <span>v</span>/<span>v</span>, containing 10 mM ammonium acetate) and solvent B (isopropanol/acetonitrile, 9:1, <span>v</span>/<span>v</span>, containing 10 mM ammonium acetate), delivered at a flow rate of 0.4 mL/min. The total analytical run time was 20 min per sample. Data acquisition was carried out using Analyst software (version 1.6.2), and data processing and semiautomatic peak integration were performed with MultiQuant software (version 3.0; SCIEX, Framingham, MA, USA). Samples were analyzed in a randomized sequence with continuous monitoring of quality control samples. Raw peak areas were QC-normalized by LOESS [<a target="_blank" rel="noopener noreferrer" href="https://www.mdpi.com/1422-0067/27/4/1926#B48-ijms-27-01926">48</a>] and IS-normalized by the corresponding IS class for each lipid.</p><h5><strong>4.6. Statistical Analysis</strong></h5><p>The data were processed using the Metabol package [<a target="_blank" rel="noopener noreferrer" href="https://www.mdpi.com/1422-0067/27/4/1926#B48-ijms-27-01926">48</a>] in R program (v 3.6.3). Preprocessing of the data included locally estimated scatterplot smoothing (LOESS), Pareto scaling, filtering of analytes (coefficients of variation in the QC above 30%), mean centering, and the lnPQN normalization (<a target="_blank" rel="noopener noreferrer" href="https://www.mdpi.com/1422-0067/27/4/1926#app1-ijms-27-01926">Supplementary Table S1</a>) [<a target="_blank" rel="noopener noreferrer" href="https://www.mdpi.com/1422-0067/27/4/1926#B49-ijms-27-01926">49</a>]. Univariate statistical analysis (based on the non-parametric non-paired Mann–Whitney U test (<span>p</span>-values shown as −log) together with the log2 fold-change in medians) was performed and visualized using GraphPad Prism (version 9.0, GraphPad Software, LLC, Boston, MA, USA). Data were also evaluated using multivariate statistical analysis, namely the principal component analysis (PCA) and orthogonal discriminant analysis by partial least squares (OPLS-DA) and validated by permutation using SIMCA software (version 18.0, Sartorius Umetrics, Umeå, Sweden). Benjamini–Hochberg correction was used for false discovery rate correction. Detected lipid species were mapped to standardized lipid classes and subclasses according to accepted lipidomics nomenclature, enabling consistent grouping of lipid species for downstream statistical, class-level, and network analyses. LipidOne 2.4 was further used to support lipid-centric data integration and visualization prior to multivariate and pathway-based analyses (such as heatmaps, ROC analyses using a Naive-Bayesian model and Logistic Regression model, and protein–protein interaction network based on lipidomics data) [<a target="_blank" rel="noopener noreferrer" href="https://www.mdpi.com/1422-0067/27/4/1926#B50-ijms-27-01926">50</a>]. Lipid network visualization was performed using Cytoscape software (v 3.8.2) [<a target="_blank" rel="noopener noreferrer" href="https://www.mdpi.com/1422-0067/27/4/1926#B51-ijms-27-01926">51</a>]. Differentially abundant lipid species were organized according to lipid class and structural similarity. Node size reflected the −log10 <span>p</span>-value from univariate analysis, while node color represented log2 fold change between groups. Calculation of Fisher’s combined probability test for assessing systematic lipid class-level differences was performed (<a target="_blank" rel="noopener noreferrer" href="https://www.mdpi.com/1422-0067/27/4/1926#app1-ijms-27-01926">Supplementary Table S2</a>) and calculated following procedures described previously [<a target="_blank" rel="noopener noreferrer" href="https://www.mdpi.com/1422-0067/27/4/1926#B52-ijms-27-01926">52</a>].</p><h4><strong>5. Conclusions</strong></h4><p>In conclusion, our findings demonstrate significant alterations in lipid metabolism in BRC patients undergoing AI therapy, with pronounced changes in Cer, SM, DG, TG, PC, PI, and PE lipids and lipid classes. However, the precise mechanisms underlying the differences in lipid metabolism between patients before and during AI treatment remain to be fully elucidated. Future longitudinal studies with paired pre- and post-treatment samples from the same individuals leveraging comprehensive lipidomic profiling are needed to deepen our understanding of AI-induced metabolic alterations and to inform the development of targeted interventions aimed at mitigating adverse effects, ultimately improving long-term outcomes and quality of life for these patients.</p></div></div>

Aromatase Inhibitor Therapy Is Associated with Distinct Plasma Lipidomic Profiles in Postmenopausal Breast Cancer Patients

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Thermo Scientific Dionex IonPac CS19 IC Columns

Separate common inorganic cations, small polar amines and polyvalent amines using Thermo Scientific Dionex IonPac CS19 IC Columns

<p><strong>Separate polar amines with the Thermo Scientific™ Dionex™ IonPac™ CS19 Cation-Exchange Column. This high-capacity, carboxylate-functionalized column is specifically optimized for the separation of common cations, small polar amines, and moderately hydrophobic and polyvalent cations using simple aqueous eluents and elevated temperatures. The column is ideal for analysis of power plant waters treated with ammonium, morpholine, or ethanolamine and can also be used to analyze chemical additives, chemical process solutions, scrubber solutions, personal care products, and food samples.</strong></p><h5><strong>Analyze Common Cations and Small Polar Amines in Diverse Matrices</strong></h5><ul><li>Simple gradient separation of small polar amines (including alkanolamines and methylamines), and moderately hydrophobic and polyvalent amines (including biogenic amines and alkyl diamines)</li><li>Optimized for simple acidic gradient separations with minimal baseline shift</li><li>High capacity facilitates the analysis of widely disparate peak pairs and high ionic strength matrices with less overloading of the column</li><li>Compatible with moderate amounts of organic solvents, excluding alcohols, to enhance analyte solubility, modify column selectivity, and facilitate effective column clean-up</li></ul><h5><strong>Multiple Formats Available for Application Flexibility</strong></h5><ul><li>4x250mm, 2x250mm analytical columns</li><li>4x50mm, 2x50mm guard columns</li><li>Longer 250mm columns facilitate higher resolution separations of more complex sample matrices</li><li>Smaller i.d. columns provide higher mass sensitivity, eluent and reagent conservation and lower operating costs</li></ul><h4><strong>Specifications</strong></h4><ul><li><strong>Crosslinking: </strong>55% DVB</li><li><strong>Column Capacity:</strong> 2410 μeq</li><li><strong>For Use With (Application):</strong> Cation Exchange</li><li><strong>Max. Pressure:</strong> 3000 psi (207 bar)</li><li><strong>Solvent Compatibility:</strong> Acidic Eluents (pH 0 to 7), 0 to 10% HPLC Solvents, Alcohols Should be Avoided</li><li><strong>Stationary phase:</strong> Super Macroporous Resin</li><li><strong>Format:</strong> Standard Bore</li><li><strong>Packing Material: </strong>Ethylvinylbenzene/Divinylbenzene</li></ul>

Thermo Scientific Dionex IonPac CS19-4μm IC Columns

High-capacity ion-exchange column with 4 μm resin for highest resolution of cations and polar amines in complex samples. Enables fast, reliable separations and cost-effective operation with HPIC systems.

<p><strong>Attain the optimal combination of chromatographic speed and high resolution using the new Thermo Scientific™ Dionex™ IonPac™ CS19-4μm Capillary, Analytical, &amp; Guard Column. This high-capacity, high-resolution carboxylate-functionalized column provides excellent resolution of common cations, small polar amines, and polyvalent amines in complex sample matrices such as power plant waters treated with ammonium, morpholine, or ethanolamine, chemical additives, chemical process solutions, scrubber solutions, personal care products, and food samples.</strong><br><strong>Compared to the Thermo Scientific™ Dionex™ IonPac™ CS19 column, this column uses smaller resin particles for more efficient separations resulting in more accurate peak integration and more reliable results.</strong></p><h5><strong>Highest Resolution Separation of Common Cations and Small Polar Amines in Diverse Matrices</strong></h5><ul><li>Highest resolution, through the use of smaller resin particles, of common cations and small polar amines in complex sample matrices</li><li>Higher peak efficiency and increased peak resolution for more consistent integration and more reliable results</li><li>Easily transfer applications from the Dionex IonPac CS19 column to the 4 μm column due to the similar selectivity</li><li>Simple gradient separation of small polar amines (including alkanolamines and methylamines), and moderately hydrophobic and polyvalent amines (including biogenic amines and alkyl diamines)</li><li>High capacity facilitates injection of more concentrated samples without column overloading or peak broadening</li><li>Compatible with moderate amounts of organic solvents, excluding alcohols, to enhance analyte solubility, modify column selectivity, and facilitate effective column clean-up</li></ul><h5><strong>Use With a High-Pressure IC System</strong></h5><p>Higher resolution is achieved through the use of smaller resin particles, which produce a column backpressure over 3000 psi at the standard flow rates. A high-pressure IC system, such as the Thermo Scientific™ Dionex™ ICS-5000+ HPIC™ or the Dionex ICS-4000 Capillary HPIC system is required to operate this column under standard conditions and take advantage of elevated flow rates and faster run times.</p><h5><strong>Reduce Operating Costs With Lower Eluent Requirements</strong></h5><p>The Dionex IonPac CS19-4μm capillary column provides the same performance as the standard bore and microbore Dionex IonPac CS19-4μm columns because it is packed with the same material. Operating costs are reduced because the capillary system operates at only 1% of the eluent flow rate of the standard bore system, requiring less eluent and producing less waste.</p><h5><strong>Multiple Formats Available for Application Flexibility</strong></h5><ul><li>4x250mm, 2x250mm analytical columns</li><li>4x50mm, 2x50mm guard columns</li><li>0.4x250mm capillary column, 0.4x50mm capillary guard column</li><li>Longer 250mm columns facilitate higher resolution separations of more complex sample matrices</li><li>Smaller i.d. columns provide higher mass sensitivity, eluent and reagent conservation and lower operating costs</li></ul><h4><strong>Specifications</strong></h4><ul><li><strong>Crosslinking: </strong>55% DVB</li><li><strong>Column Capacity:</strong> 2410 μeq</li><li><strong>For Use With (Application):</strong> Cation Exchange</li><li><strong>Max. Pressure:</strong> 5000 psi (345 bar)</li><li><strong>Solvent Compatibility:</strong> Acidic Eluents (pH 0 to 7), 10% HPLC Solvents, Alcohols Should be Avoided</li><li><strong>Stationary phase:</strong> IonPac CS19-4μm</li><li><strong>Format:</strong> Standard Bore</li></ul>

Thermo Scientific Dionex IonPac CS20 IC Columns

Analyze inorganic cations and amines using the Thermo Scientific™ Dionex™ IonPac™ CS20 ion chromatography (IC) columns.

<p><strong>Analyze inorganic cations and amines using the Thermo Scientific™ Dionex™ IonPac™ CS20 ion chromatography (IC) columns. Designed to complement Dionex IonPac CS18 and Dionex IonPac CS19 columns, the Dionex IonPac CS20 columns provide a large separation window between monovalent and divalent cations. This allows most amines to elute after the alkali metals but before the alkaline earth metals, moving the amines away from matrix ions that would normally make quantitation difficult. Its selectivity makes the Dionex IonPac CS20 particularly useful for determining a variety of alkyl and alkanol amines.</strong></p><h5><strong>Superior performance in the separation of common inorganic cations and amines</strong></h5><ul><li>Use the high capacity Dionex IonPac CS20 to determine inorganic cations and amines including methylamines, ethylamines, ethanolamines, and alkanolamines in diverse sample matrices</li><li>Unique stationary phase functionalized with a combination of sulfonic, phosphonic, and carboxylic acid groups can tolerate acidic samples containing up to 100mM hydronium ion (pH 1) with minimum loss of performance</li><li>Operable over a wide temperature range (15-70°C) to facilitate method development and improve critical pair separations</li><li>Compatible with 100% organic solvents (acetonitrile and acetone) to enhance analyte solubility, modify column selectivity, and facilitate effective column clean-up</li></ul><h5><strong>Use with a high-pressure IC system</strong></h5><p>A high-pressure IC system, such as the Thermo Scientific™ Dionex™ ICS-5000+ HPIC™, Dionex Integrion™ HPIC system, or the Dionex ICS-4000 Capillary HPIC system is required to operate this column under standard conditions.</p><h5><strong>Reduce operating costs with lower eluent requirements</strong></h5><p>The Dionex IonPac CS20 capillary columns provide the same performance as the standard bore and microbore Dionex IonPac CS20 columns because they are packed with the same material. Operating costs are reduced because the capillary system operates at only 1% of the eluent flow rate of the standard bore system, requiring less eluent and producing less waste.</p><h5><strong>Multiple Formats Available</strong></h5><ul><li>4x250mm and 2x250mm analytical columns</li><li>4x50mm and 2x50mm analytical guard columns</li><li>0.4x250mm capillary columns</li><li>0.4x50mm capillary guard columns</li><li>Smaller i.d. columns provide higher mass sensitivity, conserve eluent and reagents, and reduce operating costs</li></ul><h4><strong>Specifications</strong></h4><ul><li><strong>Crosslinking: </strong>55% DVB</li><li><strong>Column Capacity:</strong> 3000 μeq</li><li><strong>For Use With (Application):</strong> Cation Exchange</li><li><strong>Max. Pressure:</strong> 5000 psi (345 bar)</li><li><strong>Solvent Compatibility:</strong> pH 0 to 7, 0 to 100% Organic HPLC Solvents, Alcohols Should be Avoided</li><li><strong>Stationary phase:</strong> Macroporous Resin</li><li><strong>Format:</strong> Standard Bore</li><li><strong>Packing Material: </strong>Ethylvinylbenzene/Divinylbenzene</li></ul>

Thermo Scientific Dionex IonPac CS21-Fast-4μm IC Columns

Resolve quaternary amine cationic polar pesticides including chlormequat, mepiquat, paraquat, and diquat with the Thermo Scientific™ Dionex™ IonPac™ CS21-Fast-4μm column. 

<p><strong>Resolve quaternary amine cationic polar pesticides including chlormequat, mepiquat, paraquat, and diquat with the Thermo Scientific™ Dionex™ IonPac™ CS21-Fast-4μm column. The unique selectivity of the Dionex IonPac CS21-Fast-4μm column allows it to resolve trace amounts of cationic polar pesticides in high ionic strength matrices within approximately fifteen minutes using an electrolytically generated MSA gradient. Quaternary amines are eluted away from matrix cations, making the Dionex IonPac CS21-Fast-4μm column ideal for IC-MS/MS applications where matrix ions are diverted to waste.</strong></p><h5><strong>Superior Chromatographic Performance</strong></h5><ul><li>High capacity allows injection of complex matrices without overloading the column while maintaining excellent peak shapes for lower concentration analytes.</li><li>Quickly separate trace levels of the four major quaternary amine cationic polar pesticides chlormequat, mepiquat, paraquat, and diquat in high ionic strength matrices using an MSA gradient.</li><li>Separate other cationic pesticides of interest including diethanolamine, triethanolamine, N-N-dimethylhydrazine, trimethylsulfonium, morpholine, melamine, streptomycin, and nereistoxin.</li></ul><h5><strong>Specifically designed for IC-MS/MS applications</strong></h5><ul><li>Completely resolves paraquat and diquat, species with similar masses.</li><li>Available in microbore format that is compatible with MS flow rates.</li><li>Selectivity allows matrix ions to be diverted to waste which keeps the MS source cleaner.</li><li>Solvent compatible (up to 100% acetonitrile and 20% isopropyl alcohol).</li><li>Fast analysis of cationic polar pesticides in food, beverages, and environmental waters.</li></ul><h5><strong>Use with a High-Pressure IC system</strong></h5><p>A high-pressure IC system, such as the <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/410"><strong>Thermo Scientific™ Dionex™ ICS-6000 HPIC system</strong></a> or <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/408"><strong>Thermo Scientific™ Dionex™ Integrion™ HPIC system</strong></a> is required to operate this column under standard conditions.</p><h4><strong>Specifications</strong></h4><ul><li><strong>Crosslinking: </strong>80% DVB</li><li><strong>Column Capacity:</strong> 110 μeq</li><li><strong>For Use With (Application):</strong> Cation Exchange</li><li><strong>Max. Pressure:</strong> 5000 psi (345 bar)</li><li><strong>Solvent Compatibility:</strong> pH 0-7, HPLC solvents (100% acetonitrile and up to 20% isopropyl alcohol), primary and secondary alcohols should be avoided)</li><li><strong>Format:</strong> Microbore</li><li><strong>Packing Material:</strong> Ethylvinylbenzene/Divinylbenzene</li></ul>

Thermo Scientific SurePac Bio 550 SEC MDi HPLC Columns

SurePac™ Bio 550 SEC MDi™ column delivers high-resolution, reproducible AAV size-based separations with 3 μm silica, 550 Å pores, and bioinert hardware for optimal recovery and QC reliability.

<p><strong>Experience the future of Size-Exclusion Chromatography (SEC) with SurePac™ Bio 550 SEC MDi™ analytical columns and guards exclusively designed to deliver robust and reproducible performance at high resolution and throughput to accelerate your therapeutics analysis process. The column's groundbreaking MDi™ technology integrates our advanced 3 μm monodisperse silica particle platform with bioinert hardware to ensure superior reliability for best sample recovery. SurePac™ Bio 550 SEC MDi™ column is ideal for AAV gene therapeutics analysis and offers excellent selectivity due to the dedicated smaller particle (3 μm) size combined with wide-pore (550Å) for separating monomeric AAVs from aggregates based on their size differences.</strong></p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Thermo_Scientific_Sure_Pac_Bio_550_SEC_M_Di_HPLC_Columns_3_8391a584e0.jpg" alt="Thermo Scientific: SEM image of 3μm monodisperse silica particles (left) vs. 3 μm polydisperse particles (right)" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Thermo_Scientific_Sure_Pac_Bio_550_SEC_M_Di_HPLC_Columns_3_8391a584e0.jpg 245w," sizes="100vw" width="1023" height="508"></p><p>SurePac Bio 550 SEC MDi columns and guards are based on high-purity, spherical, porous (550 Å), 3 μm monodispersed silica particles that are covalently modified with a proprietary diol hydrophilic layer. This unique design yields shorter diffusion distances and enhanced reproducible mass transfer and narrower peaks. The consistent size of these particles facilitates precise control over media synthesis and column packing, significantly improving column-to-column and lot-to-lot reproducibility. The columns are housed in a hydrophilic bioinert-coated stainless-steel hardware to eliminate secondary interactions, ensuring optimal performance during the initial injection process.</p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Thermo_Scientific_Sure_Pac_Bio_550_SEC_M_Di_HPLC_Columns_043f131056.jpg" alt="Thermo Scientific: SurePac Bio 550 SEC MDi HPLC Columns" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Thermo_Scientific_Sure_Pac_Bio_550_SEC_M_Di_HPLC_Columns_043f131056.jpg 156w," sizes="100vw" width="650" height="650"></p><ul><li>Ideal for AAV gene therapy characterization and quality control assessment due to selectivity of the dedicated smaller particle (3 μm) combined with wide-pore (550Å) size</li><li>Superior column-to-column and lot-to-lot reproducibility eliminates column variability as a concern in stability and QA/QC testing</li><li>High-efficiency peaks with excellent recovery</li><li>Higher resolution and throughput for fast turnaround time without sacrificing performance</li><li>Bioinert hardware to eliminate analyte adsorption</li></ul><h4><strong>Specifications</strong></h4><ul><li><strong>Max. Pressure: </strong>3500 psi (241 bar)</li><li><strong>Packing Material:</strong> Monodisperse Silica Resin</li><li><strong>Flow Rate: </strong>0.6 mL/min</li><li><strong>Temperature:</strong> 20°C to 60°C</li><li><strong>Phase:</strong> Size Exclusion</li><li><strong>Particle Size: </strong>3 μm</li><li><strong>pH: </strong>2 to 8</li></ul>

Thermo Scientific SureSTART Vials and Well Plates Collection

Start your analysis with confidence using SureSTART vials, caps, well plates, and kits—offering full compatibility, quality materials, and performance across three levels.

<h4><strong>Streamlined choice. Trusted quality.</strong></h4><p><strong>Start your analysis with confidence using Thermo Scientific™ SureSTART™ vials, caps, inserts, well plates, mats, and certified kits designed to meet your analytical, regulatory, and performance requirements. With full instrument compatibility, high material quality, and consistent performance across three defined levels, the SureSTART collection offers a smarter way to choose the right sample containment solution for your workflow.</strong></p><h3><strong>Why choose SureSTART?</strong></h3><ul><li><strong>Proven reliability</strong>: Every product is manufactured and certified to meet physical specifications—no weak links in your workflow.</li><li><strong>Clear selection</strong>: Three performance levels help you balance sensitivity, robustness, and cost, now visually marked with one, two, or three waves on the vial.</li><li><strong>Universal compatibility</strong>: Designed for seamless integration with all major GC, HPLC/UHPLC, and MS autosamplers across all vendors.</li><li><strong>Certified cleanliness</strong>: Products are manufactured using the purest glass and plastics with low extractables and leachables, including GOLD-grade and silanized glass.</li><li><strong>Maximum sample integrity</strong>: Minimize analyte loss and background peaks with precision-engineered sealing, surface chemistry, and material composition.</li><li><strong>Bulk savings &amp; simplified inventory</strong>: Available in multiple pack sizes, performance levels, and formats to support your lab’s needs and budget.</li></ul><h3><strong>The Three Performance Levels</strong></h3><ul><li><strong>Level 1 – Everyday analysis</strong>: For general-purpose GC/HPLC detection (e.g. UV/Vis, FID, RI). These chromatography-approved products are ideal for routine analyses with cost-efficiency in mind.</li><li><strong>Level 2 – High-throughput analysis</strong>: Designed for regulated labs requiring robust and reproducible data, especially when using MS detectors for routine quantification.</li><li><strong>Level 3 – High performance</strong>: For the most sensitive and selective analyses near the method detection limit. Packed in cleanroom environments and made with ultra-pure materials for maximum sample security and MS compatibility.</li></ul><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Thermo_Scientific_Sure_START_Vials_and_Well_Plates_Collection_5a8b0da936.jpg" alt="Thermo Scientific SureSTART Vials and Well Plates Collection: Three performance levels help you balance sensitivity, robustness, and cost, now visually marked with one, two, or three waves on the vial." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Thermo_Scientific_Sure_START_Vials_and_Well_Plates_Collection_5a8b0da936.jpg 245w," sizes="100vw" width="1182" height="270"></p><h3><strong>SureSTART Certified Vial and Cap Kits</strong></h3><ul><li><strong>Specification Certified</strong>: Routine analyses – Certified for physical specifications; no individual certificate.</li><li><strong>LC/GC Certified</strong>: Chromatography-grade – Tested for 15 physical parameters with LC-UV &amp; GC-FID; certificate included.</li><li><strong>MSCERT</strong>: For LC-MS/GC-MS – Certified low-adsorption kits tested with MS; includes SureStop™ vials with AVCS™ caps.</li><li><strong>MSCERT+</strong>: For trace-level MS or DIA – Pre-cleaned, tested with LC-MS/GC-MS, and sold only as kits to ensure purity.</li><li><strong>Application Certified</strong>: Pre-matched kits for specific instruments or validated applications.</li></ul><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Thermo_Scientific_Sure_START_Vials_and_Well_Plates_Collection_2_fef6049d71.jpg" alt="Thermo Scientific SureSTART Vials and Well Plates Collection: There are several factors to consider when choosing a vial or well plate for your application. The table below will help guide you through this process to determine what type of product/performance level is most suitable for your application requirements." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Thermo_Scientific_Sure_START_Vials_and_Well_Plates_Collection_2_fef6049d71.jpg 204w," sizes="100vw" width="1515" height="1159"></p><h3><strong>SureSTART Well Plates and Mats</strong></h3><p>Thermo Scientific™ WebSeal™ well plates are ideal for laboratories seeking to increase autosampler capacity, reduce solvent usage, and streamline high-throughput workflows. Available in <strong>96- and 384-well formats</strong>, they offer a certified alternative to traditional vials and are fully compatible with automated SPE/SLE platforms.</p><ul><li><strong>Space-saving efficiency</strong>: Replace vials with well plates to increase sample capacity up to 8× and reduce storage footprint.</li><li><strong>Flexible performance levels</strong>:<ul><li><strong>Level 1: Standard plates for routine</strong>, non-regulated use (GC-tested).</li><li><strong>Level 2: Low-bleed plates and high-performance mats</strong>, validated for LC-MS/GC-MS.</li><li><strong>Level 3: Premium WebSeal Plate+</strong> with glass-coated plastic wells—ideal for trace analytes and protein adsorption control.</li></ul></li><li><strong>Solvent stability and clean sample contact</strong>: WebSeal Plate+ uses nanolayered silicon dioxide for minimal extractables and ultra-low adsorption.</li><li><strong>Compatible sealing options</strong>:<ul><li><strong>Silicone mats: </strong>For long-term storage and consistent results.</li><li><strong>Pre-slit mats: </strong>For autosampler injection without evaporation or contamination.</li><li><strong>Adhesive seals: </strong>For single-use workflows and re-sealing options with cavity protection.</li></ul></li></ul><p>Whether you work with polar solvents, proteins, or trace-level analyses, SureSTART well plates and sealing accessories help you optimize throughput, precision, and data confidence across all chromatography workflows.</p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Thermo_Scientific_Sure_START_Vials_and_Well_Plates_Collection_3_abce3dd960.jpg" alt="Thermo Scientific SureSTART Vials and Well Plates Collection: Selecting the perfect Thermo Scientific WebSeal well plates and mats for your chromatography requirements is easy using our selector tools and resources." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Thermo_Scientific_Sure_START_Vials_and_Well_Plates_Collection_3_abce3dd960.jpg 245w," sizes="100vw" width="1516" height="902"></p>

Thermo Scientific LCQUAN Quantitative Software

LCQUAN is a robust, 21 CFR Part 11-compliant software for LC-MS/MS bioanalysis, providing complete tools for data acquisition, review, and secure management in drug development workflows.

<h4><strong>21 CFR Part 11-compliant software for quantitative LC-MS/MS data acquisition and management</strong></h4><p><strong>Thermo Scientific™ LCQUAN™ quantitative software is a robust, regulatory-compliant data system tailored for bioanalytical laboratories conducting LC-MS/MS assays. Developed in close collaboration with pharmaceutical industry experts, LCQUAN provides all the tools needed to acquire, process, review, and securely manage quantitative data across global drug development workflows.</strong></p><h3><strong>Key Features</strong></h3><h4><strong>Regulatory Compliance</strong></h4><ul><li>Fully compliant with FDA 21 CFR Part 11 requirements for electronic records and signatures</li><li>Enables secure submission of electronic documents to regulatory agencies, including the FDA</li></ul><h4><strong>Comprehensive Workflow</strong></h4><ul><li>Guides users step-by-step through acquisition, method development, data review, processing, reporting, and export</li><li>Supports import of sequence information from external systems</li><li>Streamlines interaction with Thermo Scientific™ Watson LIMS™ for GLP-compliant bioanalytical studies</li></ul><h4><strong>Secure Data Management</strong></h4><ul><li>Enables data processing on networked systems, including secure remote disks</li><li>Centralized, workbook-style data storage for easy archiving and retrieval</li><li>Multi-level user privileges—from full system access to read-only modes</li></ul><h4><strong>Seamless LIMS Integration</strong></h4><ul><li>Bi-directional communication with Watson LIMS facilitates study tracking, chromatogram review, auditing, and compliance</li><li>Optimized for regulated pharmaceutical workflows from discovery through clinical trials</li></ul><h4><strong>Proven Platform</strong></h4><ul><li>Part of an integrated Thermo Scientific LC-MS/MS solution suite, including TSQ Series mass spectrometers and FAIMS interface technology</li><li>Ensures high sensitivity, robustness, and reproducibility for regulated bioanalytical assays</li></ul>

Thermo Scientific Cindion Combustion Ion Chromatography System

Fully integrated C-IC system for automated screening of halogens, sulfur compounds, and PFAS in solid, liquid, and gas samples.

<h4><strong>Automated halogen, sulfur, and PFAS screening in solid, liquid, and gas samples.</strong></h4><p>The <strong>Thermo Scientific™ Cindion™ Combustion Ion Chromatography (C-IC) System</strong> is a fully integrated platform designed for screening corrosive and toxic halogens, sulfur compounds, and PFAS in a wide range of sample matrices. Whether analyzing solids, liquids, or gases, the system delivers low background levels, high sensitivity, and robust automated workflows—all in a compact footprint.</p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Thermo_Scientific_Cindion_Combustion_Ion_Chromatography_System_6_e1eda9de2f.jpg" alt="Thermo Scientific™ Cindion™ Combustion Ion Chromatography System" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Thermo_Scientific_Cindion_Combustion_Ion_Chromatography_System_6_e1eda9de2f.jpg 207w," sizes="100vw" width="650" height="490"></p><h3><strong>Key Features</strong></h3><ul><li><strong>Compact system footprint:</strong> A novel combustion tube design ensures complete combustion over a shorter path, saving bench space and enhancing efficiency.</li><li><strong>Fully automated workflow:</strong> From sample introduction to combustion, absorption, ion chromatographic separation, and data reporting—automation minimizes user intervention.</li><li><strong>PFAS-free sample path:</strong> Components in the sample flow path are PFAS-free to eliminate contamination and enable ultra-sensitive PFAS detection (EPA Method 1621).</li><li><strong>Reagent-Free Ion Chromatography (RFIC™):</strong> Automated eluent generation—just add water. Electrolytic suppression ensures consistent results with no external pump.</li><li><strong>Versatile sample compatibility:</strong> Supports AOX and AOF determinations, as well as total and inorganic fluorine (TF/TIF) analysis in environmental, food, industrial, and petrochemical applications.</li><li><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/76"><strong>Chromeleon CDS integration</strong></a><strong>:</strong> A single software platform for full control of C-IC operations including sequence setup, system control, and reporting.</li><li><strong>High throughput:</strong> Accommodates up to 45 solid or 120 liquid samples; includes smart hydration and reduced carryover for faster cycle times.</li><li><strong>Application-ready:</strong> Backed by extensive application notes and 50+ years of Thermo Scientific expertise in ion chromatography.</li></ul><h3><strong>Typical Applications</strong></h3><ul><li><strong>Environmental testing:</strong> AOX/AOF screening in water and wastewater; PFAS monitoring.</li><li><strong>Food and packaging:</strong> Determination of organic fluorine content in food contact materials.</li><li><strong>Petrochemicals:</strong> Halogen and sulfur analysis in fuels and oils to prevent equipment corrosion and meet emission standards.</li><li><strong>Electronics and polymers:</strong> Detection of restricted brominated and fluorinated substances in plastics and E&amp;E components.</li><li><strong>Mining and metallurgy:</strong> Screening for corrosive species in ores and geological samples.</li></ul><h3><strong>System Components</strong></h3><ul><li><strong>Sample delivery module:</strong> Liquid/solid autosampler or gas injector.</li><li><strong>Combustion/absorption unit:</strong> Integrated with autosampler and absorption tube.</li><li><strong>Ion chromatography system:</strong> <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/1078"><strong>Thermo Scientific™ Dionex™ IC with RFIC™</strong></a> technology.</li></ul><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Thermo_Scientific_Cindion_Combustion_Ion_Chromatography_System_3_79a361351d.jpg" alt="Thermo Scientific™ Cindion™ Combustion Ion Chromatography System" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Thermo_Scientific_Cindion_Combustion_Ion_Chromatography_System_3_79a361351d.jpg 243w," sizes="100vw" width="1509" height="971"></p><ol><li><strong>Versatile autosampler.</strong> Load up to 45 (solid) or 120 (liquid) samples and easily switch between sample types without the need for tools.</li><li><strong>Peltier cooled sample introduction.</strong> Reduce cycle time by accelerating the cooling of the boat between samples.</li><li><strong>Compact combustion tube.</strong> Enhanced oxygen flow reduces time needed for complete combustion by increasing efficiency.</li><li><strong>Smart hydration.</strong> Peristaltic pump delivers water only during sample combustion to minimize usage and preserve tube integrity.</li><li><strong>Variable absorption volume.</strong> Optimize the absorption volume based on analytical need.</li><li><strong>Reduced sample pathway.</strong> Lower baseline contamination and low sample carryover to decrease wash time between samples.</li><li><strong>Advanced high-performance pump technology and electronics.</strong> Take advantage of a wider range of columns and chemistries improving speed and quality of results.</li><li><strong>Function driven design.</strong> Quickly and safely access everything on the instrument.</li><li><strong>Fast, flexible, convenient electrolytic suppression.</strong> Just connect the suppressor; no external pump or offline conditioning needed for regeneration.</li><li><strong>Thermo Scientific™ Dionex™ Reagent-Free™ Ion Chromatography (RFIC™).</strong> Makes eluent preparation as simple as “just add water,” while ensuring more consistent results and enabling optimized gradient separations.</li></ol><h3><strong>Results you can count on</strong></h3><p>Getting analytes into solution is only part of the process. Being able to resolve them so that each peak can be accurately quantified is equally integral to reliable, accurate results.</p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Thermo_Scientific_Cindion_Combustion_Ion_Chromatography_System_4_96814c59fb.jpg" alt="Thermo Scientific™ Cindion™ Combustion Ion Chromatography System: Figure 1. PFAS as adsorbable organic fluorine (AOF) in municipal wastewater. C-IC can be used as a screening tool for presence of PFAS compounds by adsorption onto granular activated carbon, subsequent combustion and IC analysis." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Thermo_Scientific_Cindion_Combustion_Ion_Chromatography_System_4_96814c59fb.jpg 245w," sizes="100vw" width="1032" height="541"></p><p>Our IC systems are paired with an unmatched portfolio of columns that are optimized to deliver the capacity, selectivity and resolution you need to get the answers you seek.</p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Thermo_Scientific_Cindion_Combustion_Ion_Chromatography_System_5_b47f92752f.jpg" alt="Thermo Scientific™ Cindion™ Combustion Ion Chromatography System: Figure 2. PFAS in food contact material. PFAS, as organic fluorine, can be determined by subtracting values for total inorganic fluorine (TIF) from total fluorine (TF) by IC and C-IC, respectively." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Thermo_Scientific_Cindion_Combustion_Ion_Chromatography_System_5_b47f92752f.jpg 245w," sizes="100vw" width="1184" height="588"></p>

Thermo Scientific Vanquish Charged Aerosol Detectors

Thermo Scientific Vanquish CAD detectors deliver near-universal detection with high sensitivity, wide dynamic range, gradient compatibility, and compliance-ready design.

<p><strong>Expand your detection range and achieve accurate quantitation in High-Performance Liquid Chromatography (HPLC) with the near-universal Charged Aerosol Detector (CAD). Featuring a wide linear and dynamic range along with a uniform response independent of chemical structure, Thermo Scientific™ Vanquish™ CAD systems allow you to measure virtually all non-volatile and many semi-volatile analytes at low-nanogram to sub-nanogram concentrations. Confidently quantify both trace impurities and highly concentrated active compounds in a single analysis.</strong></p><h3><strong>Key Benefits</strong></h3><ul><li><strong>Standard-free quantitation of unknowns</strong> – uniform response enables reliable single-calibrant quantitation</li><li><strong>Superior sensitivity</strong> – 10× lower LODs compared to ELSD, LOQs as low as 1–20 ng on-column</li><li><strong>Wide dynamic range</strong> – linear up to 2 orders of magnitude, dynamic up to 4 orders</li><li><strong>Compatible with gradient elution</strong> – maintain uniform response using inverse gradient, unlike RID</li><li><strong>Integrated diverter valve</strong> – prevents contamination, directs unwanted matrix to waste, and improves quantitation of early-eluting compounds</li><li><strong>Compliance and data integrity</strong> – full qualification of method parameters, audited flow path control, and seamless integration with <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/76"><strong>Thermo Scientific Chromeleon™ CDS</strong></a></li></ul><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Thermo_Scientific_Vanquish_Charged_Aerosol_Detectors_1_e135b2d6fe.jpg" alt="Thermo Scientific Vanquish Charged Aerosol Detectors" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Thermo_Scientific_Vanquish_Charged_Aerosol_Detectors_1_e135b2d6fe.jpg 209w," sizes="100vw" width="650" height="486"></p><h3><strong>Technical Features</strong></h3><ul><li><strong>Detection mode:</strong> Records up to 4 unique power values for optimal linear response</li><li><strong>Gas requirements:</strong> Nitrogen (recommended) or compressed air</li><li><strong>Dynamic range:</strong> Up to 4 orders of magnitude</li><li><strong>Data collection rate:</strong> Up to 200 Hz</li><li><strong>Compatibility:</strong> Designed for <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products?category=37&amp;manufacturerItems=3&amp;search=Vanquish"><strong>Thermo Scientific™ Vanquish™ HPLC and UHPLC systems</strong></a>; integration with other systems possible</li><li><strong>Outputs:</strong> Digital and analog output options available</li><li><strong>Safety features:</strong> Overpressure relief, leak sensing, high-temperature shutoff, flood prevention, and diagnostic monitoring</li></ul><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Thermo_Scientific_Vanquish_Charged_Aerosol_Detectors_3_335506f860.jpg" alt="Thermo Scientific Vanquish Charged Aerosol Detectors" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Thermo_Scientific_Vanquish_Charged_Aerosol_Detectors_3_335506f860.jpg 245w," sizes="100vw" width="650" height="378"></p><h3><strong>Product Portfolio</strong></h3><ul><li><strong>Vanquish CAD HP</strong> – broad temperature range (ambient, 10–100 °C), versatile high-performance configuration</li><li><strong>Vanquish CAD FP</strong> – fixed-point operation at defined set temperatures (ambient, 35 °C, 50 °C, 70 °C)</li><li><strong>Vanquish CAD H</strong> – heating-enabled design (ambient +5 to +100 °C)</li><li><strong>Vanquish CAD F</strong> – fixed-temperature options (35 °C, 50 °C, 70 °C)</li><li><strong>Vanquish CAD HP, Analog Output</strong> – full performance with analog signal output</li><li><strong>Vanquish CAD HP, Digital Output</strong> – full performance with digital data output</li></ul><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Thermo_Scientific_Vanquish_Charged_Aerosol_Detectors_2_795050403c.jpg" alt="Thermo Scientific Vanquish Charged Aerosol Detectors" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Thermo_Scientific_Vanquish_Charged_Aerosol_Detectors_2_795050403c.jpg 245w," sizes="100vw" width="650" height="397"></p>

Thermo Scientific TSQ Certis Triple Quadrupole Mass Spectrometer

Triple quadrupole Thermo Scientific TSQ Certis built for long-term robustness, up to 900 SRMs/s, and stable performance across tens of thousands of injections using OptaMax Plus ion source and advanced Stellar ion optics.

<p><strong>The Thermo Scientific TSQ Certis is a high-performance triple quadrupole LC-MS/MS system designed for targeted quantitative analysis in demanding routine and regulated environments. Built on the proven </strong><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/404"><strong>TSQ Altis Plus </strong></a><strong>platform, it integrates advanced front-end hardware, innovative ion optics, and compliance-ready software to deliver superior performance and uptime.</strong></p><p>Powered by the <strong>OptaMax Plus ion source</strong> and <strong>Stellar ion vector optics</strong>, TSQ Certis provides exceptional sensitivity, long-term robustness, and reproducible performance even for complex sample matrices. With an acquisition speed of up to <strong>900 SRMs per second</strong>, the system is ideally suited for <strong>pharmaceutical, clinical, forensic toxicology, environmental, and food safety laboratories</strong>.</p><p>Its rugged design supports <strong>tens of thousands of injections between cleanings</strong>, while an integrated <strong>early-warning maintenance system</strong> helps prevent unplanned downtime. Full compatibility with <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/76"><strong>Chromeleon CDS</strong></a><strong>, </strong><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/77"><strong>TraceFinder</strong></a><strong>, </strong><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/1758"><strong>Xcalibur</strong></a><strong>, FreeStyle, and </strong><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/1764"><strong>mzCloud</strong> </a>ensures seamless integration into both routine and advanced analytical workflows.</p><h4><strong>Key features</strong></h4><ul><li>Triple quadrupole LC-MS/MS for targeted quantitation</li><li>Up to <strong>900 SRMs/s</strong> for high-throughput workflows</li><li>OptaMax Plus ion source with enhanced vaporizer temperatures</li><li>Excellent sensitivity and signal stability</li><li>Fast polarity switching <strong>&lt; 5 ms</strong></li><li>Rugged design with extended maintenance intervals</li><li>Compliance-ready software ecosystem</li><li><strong>3-year standard factory warranty</strong></li></ul><h4><strong>Selected specifications</strong></h4><ul><li><strong>Type:</strong> Triple Quadrupole LC-MS</li><li><strong>Mass range:</strong> 2–2010 m/z</li><li><strong>Resolution:</strong> 0.2 FWHM</li><li><strong>Acquisition speed:</strong> 900 SRMs/s</li><li><strong>Weight:</strong> 112 kg</li><li><strong>Dimensions (W × D × H):</strong> 833 × 660 × 703 mm</li><li><strong>LC compatibility:</strong> <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products?category=37&amp;search=vanquish">Vanquish LC</a>, Transcend LC</li><li><strong>Ion sources:</strong> OptaMax Plus, OptiSpray, EASY-Spray NG, FAIMS Pro Duo, VeriSpray</li></ul><div><div><div><div><div><h3><strong>Clinical research application: long-term instrument stability even with contaminant-heavy matrices</strong></h3></div></div><div><div><p>Analyzing human whole blood by LC-MS presents persistent challenges: matrix contaminants can accumulate within the ion source and API stack, compromising signal integrity and reproducibility. Restoring data quality demands time-consuming maintenance. The TSQ Certis Mass Spectrometer proves its durability by maintaining stable, precise performance through tens of thousands of injections—minimizing downtime and maximizing throughput.</p></div></div></div></div></div><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Thermo_Scientific_TSQ_Certis_Triple_Quadrupole_Mass_Spectrometer_0ec820459f.jpg" alt="Thermo Scientific TSQ Certis Triple Quadrupole Mass Spectrometer: Raw peak area of 15pg Ascomycin on column was determined in whole blood for 10,209 injections. The experiment was run over a 5-week period, and the system delivered an RSD of 13.8% with no cleaning of the ion transfer tube or the sweep cone." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Thermo_Scientific_TSQ_Certis_Triple_Quadrupole_Mass_Spectrometer_0ec820459f.jpg 245w," sizes="100vw" width="2048" height="1152"></p><div><div><div><div><div><h3><strong>Endocrinology application: superior performance for steroid quantitation</strong></h3></div></div><div><div><p>Liquid chromatography coupled with triple quadrupole (LC–QqQ) mass spectrometry has become the industry standard for the quantitative determination of steroids in biological matrices. Compared to immunoassays, LC–QqQ MS offers superior analytical specificity, lower detection limits, and improved reproducibility, making it ideal for regulated pharmacokinetic, endocrinological, and clinical research applications. The TSQ Certis Mass Spectrometer provides the speed, specificity, and ultra-high sensitivity necessary for reliable steroid quantitation.&nbsp;</p></div></div></div></div></div><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Thermo_Scientific_TSQ_Certis_Triple_Quadrupole_Mass_Spectrometer_2_3a48cc4deb.jpg" alt="Thermo Scientific TSQ Certis Triple Quadrupole Mass Spectrometer: LC SRM chromatogram of 18 steroids in BSA run using the Thermo Scientific Vanquish Flex UHPLC System and TSQ Certis Mass Spectrometer. This is an 8-minute chromatography run utilizing the Thermo Scientific Hypersil Gold C18 Column for separation. The samples were protein crashed from 0.05% BSA in PBS, and injecting 5µL." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Thermo_Scientific_TSQ_Certis_Triple_Quadrupole_Mass_Spectrometer_2_3a48cc4deb.jpg 245w," sizes="100vw" width="2048" height="1152"></p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Thermo_Scientific_TSQ_Certis_Triple_Quadrupole_Mass_Spectrometer_3_62ede15e59.jpg" alt="Thermo Scientific TSQ Certis Triple Quadrupole Mass Spectrometer: Highly sensitive triple quadrupole instrumentation, often with advanced ion optics, is needed for Dihydrotestosterone (DHT) quantitation. The DHT quantitation peak and calibration curve of DHT run at 0.4pg on column with an RSD of 8.2%." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Thermo_Scientific_TSQ_Certis_Triple_Quadrupole_Mass_Spectrometer_3_62ede15e59.jpg 245w," sizes="100vw" width="2048" height="1152"></p>

Products distributed by Thermo Fisher Scientific (EMEA) - page 2

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