News from LabRulezLCMS Library - Week 47, 2025

News from LabRulezLCMS Library - Week 48, 2025

<p><strong>Our Library never stops expanding. What are the most recent contributions to LabRulezLCMS Library in the week of 1st December 2025? Check out new documents from the field of liquid phase, especially HPLC and LC/MS techniques!</strong></p><blockquote><p><span style="font-size:20px;">👉 </span><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/library"><span style="font-size:20px;"><strong>SEARCH THE LARGEST REPOSITORY OF DOCUMENTS ABOUT LCMS AND RELATED TECHNIQUES</strong></span></a></p></blockquote><blockquote><p><strong>👉 Need info about different analytical techniques?</strong> Peek into <a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/library"><strong>LabRulezGCMS</strong></a> or <a target="_blank" rel="noopener noreferrer" href="https://icpms.labrulez.com/library"><strong>LabRulezICPMS</strong></a> libraries.</p></blockquote><p>This week we bring you application notes by <strong>Agilent Technologies,</strong> <strong>Shimadzu </strong>and<strong> Waters Corporation</strong> and poster by <strong>Thermo Fisher Scientific / HPLC!</strong></p><h3><strong>1. Agilent Technologies: Quantitative Bioanalysis of Oligonucleotides Using a 6495D Triple Quadrupole LC/MS System Combined with an Automated SPE Workstation</strong></h3><ul><li>Application note</li><li><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/labrulez-bucket-strapi-h3hsga3/an_bioanalysis_oligonucleotides_6495d_qqq_lcms_spe_5994_8339en_agilent_82610a68ca.pdf"><strong>Full PDF for download</strong></a></li></ul><p>In drug development, the quantitative analysis of oligonucleotides in biological samples is crucial for pharmacokinetics (PK), pharmacodynamics (PD), and toxicological safety evaluations. Due to the associated structural complexity of oligonucleotides and the unique nature of biological matrices, the corresponding sample preparation techniques are often complex. Liquid-liquid extraction (LLE) and solid-phase extraction (SPE) are commonly used sample preparation methods, with SPE being more suitable to meet lower limit of quantitation (LLOQ) requirements and complex matrices.2 However, traditional manual SPE methods are time consuming and prone to human error.&nbsp;</p><p>Liquid chromatography/tandem mass spectrometry (LC/MS/MS) is widely used in oligonucleotide bioanalysis due to its high sensitivity, low detection limits, high selectivity, and specificity. Methods using LC/MS/MS enable the rapid and accurate detection and quantification of low-concentration target compounds in complex matrices without the need for special reagents and probes.3&nbsp;</p><p>To address the challenges in sample preparation, Agilent developed an automated SPE workstation based on the Bravo liquid handling platform, combined with the next‑generation triple quadrupole LC/MS/MS system, the 6495D triple quadrupole LC/MS system, providing a complete solution from sample preparation to data analysis. The 6495D triple quadrupole LC/MS system excels in high sensitivity quantification and low detection limits from complex matrices, while the automated SPE workstation significantly reduces manual intervention time and improves operational consistency and reliability. This complete automated SPE bioanalysis workflow significantly enhances the efficiency and reliability of quantitative oligonucleotide&nbsp;bioanalysis.&nbsp;</p><h4><strong>Experimental&nbsp;</strong></h4><h5><strong>Instruments&nbsp;</strong></h5><ul><li><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/library?search=1290+Infinity+III+Bio+LC+"><strong>Agilent 1290 Infinity III Bio LC&nbsp;</strong></a></li><li><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/library?mainauthorItems=10&amp;search=6495D"><strong>Agilent 6495D triple quadrupole LC/MS system&nbsp;</strong></a></li><li><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/library?mainauthorItems=10&amp;search=Automated+SPE+workstation"><strong>Agilent Automated SPE workstation</strong></a>, including Bravo, BenchCel and MiniHub</li></ul><h4><strong>Conclusion&nbsp;</strong></h4><p>This study verified the use of the automated Agilent SPE workstation combined with the Agilent 6495D triple quadrupole LC/MS system for oligonucleotide bioanalysis studies through the quantitative analysis of mipomersen in pig plasma. The experimental results showed that the system exhibited excellent linearity (R²=0.999) within the dynamic range of 2 to 1,000 ng/mL. The reproducibility and accuracy of the QC samples were within acceptable ranges, with most RSD values below 5%, QC low points below 10%, and back‑calculated concentration accuracy between 85 and 115%. Additionally, in the three-day repeatability experiment, the inter-batch reproducibility of the QC samples was good, with RSD values all below 10%. The back-calculated accuracies for QC samples at high, medium, and low concentration levels, as well as the LLOQ (2 ng/mL), remained stable between 80 and 120%.&nbsp;</p><p>By reducing manual intervention and improving operational consistency, the automated SPE workstation significantly enhances the efficiency and reliability of sample preparation. Combined with the high sensitivity and low detection limits of the 6495D triple quadrupole LC/MS system, this solution achieves efficient and accurate detection of low‑concentration oligonucleotides in complex matrices. Overall, this automated solution has broad application prospects in high-throughput oligonucleotide bioanalysis and meets the high requirements for quantitative analysis in drug&nbsp;development.</p><h3><strong>2. Shimadzu: Determination of N-Nitroso-Nebivolol in Nebivolol Drug Substance by </strong><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/library?mainauthorItems=1&amp;search=LCMS-2050"><strong>LCMS-2050</strong></a></h3><ul><li>Application note</li><li><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/labrulez-bucket-strapi-h3hsga3/an_03_lcms_055_en_8d77db9fd3.pdf"><strong>Full PDF for download</strong></a></li></ul><h4><strong>User Benefits</strong></h4><ul><li>A new method for the determination of NDSRI impurity in nebivolol raw material was established using LCMS-2050.</li><li>The method has high sensitivity, short analysis time and high accuracy, which can fully meet the FDA's AI limit for N-Nitrosonebivolol.</li></ul><p>On September 4, 2024, the FDA issued the final guidance on the control of nitrosamine impurities in human drugs (Nitrosamine Guidance Version 2). The revised guidance describes two categories of nitrosamines: small-molecule nitrosamines and nitrosamine drug substance-related impurities (NDSRIs). Unlike small-molecule nitrosamine impurities that are structurally dissimilar to the active pharmaceutical ingredient (API), NDSRIs generally exhibit structural similarity to the API and may form through interactions between the API and nitrosating agents, such as nitrite impurities present in drug excipients.&nbsp;</p><p>Nebivolol is a potent and selective third-generation β-blocker clinically used for the treatment of patients with moderate-tosevere hypertension, as well as angina pectoris and congestive heart failure, with a recommended daily dose of 5 mg. Due to its structural characteristics, the synthesis of nebivolol may involve nitrosation reactions, leading to the introduction of the NDSRI impurity N-nitroso-nebivolol. According to the FDA's nitrosamine guidance, based on the Carcinogenic Potency Categorization Approach (CPCA), the acceptable intake (AI) limit for N-nitroso-nebivolol, a potential NDSRI in nebivolol, is set at 1500 ng/day.&nbsp;</p><p>This study established an LC-MS (<a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/library?mainauthorItems=1&amp;search=LCMS-2050"><strong>LCMS-2050</strong></a>) method for the determination of N-nitroso-nebivolol in nebivolol drug substance. The method demonstrates high sensitivity, short analysis time, and accurate results, providing a reference for the detection of related nitrosamine impurities.</p><h4><strong>Separation Evaluation&nbsp;</strong></h4><p>To ensure high sensitivity in impurity analysis and prevent contamination of the mass spectrometer by high-concentration active pharmaceutical ingredient (API) components, flow path switching technology was employed. This method diverts the main nebivolol peak to waste, allowing only impurities to enter the mass spectrometer for detection. Under the optimized chromatographic conditions, The retention times of nebivolol and N-nitroso-nebivolol were 1.952 min and 3.408 min, respectively, so the mass spectrometry acquisition was initiated after 2.8 min, ensuring selective detection of the target impurity. This approach effectively enabled accurate and interferencefree analysis of trace-level impurities.</p><h4><strong>Conclusion</strong></h4><p>A novel method for determining the content of N-nitrosonebivolol in nebivolol drug substance was established by using the LCMS-2050. Within the concentration range of 1 - 180 ng/mL, the correlation coefficients of the N-nitroso-nebivolol was 0.9999. When the spiked concentration of 0.03 μg/mg and 0.3 μg/mg, the recovery rate of N-nitroso-nebivolol was 100.4 and 100.2, respectively, and the recovery rate was good and met the requirements of pharmacopoeia. The method has high sensitivity, linearity, precision and recovery rate can meet the detection requirements, and which can be used for the detection of nitrosamine impurity N-nitroso-nebivolol in nebivolol drug substance.</p><h3><strong>3. Thermo Fisher Scientific / HPLC: At the intersection between chromatographic performance, ESI efficiency and instrument productivity: nano to capillary flow LC/MS on long μPAC Columns</strong></h3><ul><li>Poster</li><li><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/labrulez-bucket-strapi-h3hsga3/po_intersection_between_chromatographic_performance_po_en_1a1d6f722b.pdf"><strong>Full PDF for download</strong></a></li></ul><p>LC-MS-based proteomics commonly employs low-flow liquid chromatography (LC) to separate tryptic peptides, which helps reduce sample complexity before MS/MS detection and protein identification. This technique benefits from minimal dilution on miniaturized columns and increased ionization efficiency via nanoflow electrospray ionization (ESI). As mass spectrometry (MS) devices become more sensitive and faster, there is an increasing need to boost throughput. The challenge lies in maintaining or increasing proteome coverage while simultaneously reducing analysis time. Typically, higher flow rates improve instrument productivity but may compromise sensitivity. In this study, the impact of eluting flow rates was assessed across various throughput ranges to identify the optimal balance between productivity and proteome coverage. Additionally, the transition to a dual-column single emitter configuration was evaluated to determine its effects on productivity and coverage. This approach aims to enhance LC-MS performance, ensuring high throughput without sacrificing the depth of proteome analysis.</p><h4><strong>Methods</strong></h4><p>HeLa cell digests were resuspended in 0.1% TFA and 1% ACN to create a 200 ng/µL stock solution, sonicated, diluted in 0.1% TFA, and vortexed. A <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/398"><strong>Thermo Scientific Vanquish Neo UHPLC instrument</strong></a> was configured for either a single analytical column in a trap-and-elute setup or two columns in tandem. For single column experiments, a Thermo Scientific PepMap Neo trap cartridge and a 110 cm µPAC Neo Plus column on a Thermo Scientific EASY-Spray source were used. LC methods with flow rates from 200 to 1000 nL/min were tested for throughputs ranging from 16 to 50 samples per day. The column was positioned in an external heating device mounted directly onto the ionization source and connected to an ESI emitter via a 20 µm ID voltage spacer. For tandem column experiments, two 110 cm µPAC Neo Plus columns were placed in the Vanquish Neo UHPLC column compartment between two low-dispersion 6-port switching valves. A 20 µm ID nanoViper line connected the eluents to an ESI emitter with an integrated liquid junction in an EASY-Spray source. Data were acquired using a <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/402"><strong>Thermo Scientific Orbitrap Exploris 240</strong></a>/<a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/401"><strong>480 mass spectrometer</strong></a> in data-independent acquisition mode.</p><h4><strong>Data Analysis&nbsp;</strong></h4><p>LC-MS data were analyzed either using a trial version of <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/1782"><strong>Thermo Scientific Proteome Discoverer 3.3 software</strong></a> with Chimerys or with Spectronaut® 19. Results shown have been filtered to a 1% FDR</p><h4><strong>Conclusions&nbsp;</strong></h4><ul><li>Increasing the flow rate to 1 µL/min significantly increases instrument productivity. For gradient times below 30 minutes, 1 µL/min performs slightly better than lower flow methods, identifying up to 6679 protein groups at 50 SPD.&nbsp;</li><li>For gradient lengths over 50 minutes, a 200 nL/min flow rate provides superior chromatographic metrics and proteome coverage, resulting into a maximum of 8556 protein groups identified at 16 SPD.&nbsp;</li><li>The negative impact of a low-dispersion 6-port valve's impact scales inversely with flow rate. At 1 µL/min, peak width increases by 40%, yielding 5% lower proteome coverage but 26% higher productivity.&nbsp;</li><li>Optimized dual column single-emitter methods identified up to 6947 protein groups at 50 SPD with 3-6% CVs for the same column and 4-8% between columns (n=6).&nbsp;</li><li>Column reproducibility was shown across 5 columns, with an ID rate variation of 0.7% for HeLa digests and a median RT CV of 0.99% for spiked-in PRTC peptides.</li></ul><h3><strong>4. Waters Corporation: Improving Sample Throughput of HPLC Methods Using CORTECS 5 μm Columns</strong></h3><ul><li>Application note</li><li><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/labrulez-bucket-strapi-h3hsga3/720009072_en_1203625d4f.pdf"><strong>Full PDF for download</strong></a></li></ul><h5><strong>Benefits&nbsp;</strong></h5><ul><li>Comparable chromatographic performance for abacavir impurities was achieved using a shorter CORTECS Premier C18 5 µm Column in place of a column packed with fully porous 5 µm particles</li><li>33% reduction in solvent usage and analysis time using a CORTECS Premier C18 5 µm Column compared to a fully porous 5 µm column</li><li>33% reduction in analytical method greenness score indicating improved sustainability for the new method</li></ul><p>Improving validated HPLC methods can be challenging. Two of the approaches to increase analytical throughput, increasing mobile phase flow rate or using shorter columns, have drawbacks in higher pressures or reduced chromatographic performance. Typically, using a shorter column also requires decreasing the particle size to maintain a constant length to particle size (L/dp) ratio to ensure similar column efficiency. However, columns packed with smaller particles generate higher back pressures. Some labs may be able to migrate methods to shorter columns packed with smaller particles by transferring to a HPLC system capable of operating at higher pressures. However, if a laboratory lacks access to such systems, then their options may be limited. In those situations, finding appropriate columns to use to improve a method is not only a matter of chromatographic performance but also system compatibility, particularly from a pressure standpoint. Older HPLC systems are limited to lower pressures compared to more modern systems.&nbsp;</p><p>This application brief examines the improvement of a method for testing abacavir impurities by migrating the original method from a 4.6 x 150 mm 5 µm fully porous C18 column to a CORTECS Premier C18 4.6 x 100 mm 5 µm Column. Additionally, a fully porous 3.5 µm C18 column in 4.6 x 100 mm hardware was evaluated to determine if moving to a smaller particle size would have as much of a benefit as that provided by using a CORTECS Column. The separation conditions for method migration were obtained using the Waters Column Calculator. Along with examining throughput, solvent savings were calculated as well as analytical method greenness scores for each column tested.</p><h4><strong>Experimental</strong></h4><h5><strong>Method Conditions&nbsp;</strong></h5><ul><li><strong>LC system:</strong> <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/210"><strong>Alliance™ HPLC System</strong></a> with 2489 UV/Visible (UV/Vis) Detector</li></ul><h5><strong>Data Management&nbsp;</strong></h5><ul><li><strong>Chromatography software: </strong><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/627"><strong>Empower™ Chromatography Data System (CDS)</strong></a></li></ul><h4><strong>Results and Discussion&nbsp;</strong></h4><p>Previously, the impurity method for abacavir was migrated to a 2.7 µm CORTECS Column.1 While that work showed the benefits of scaling to a smaller particle size, not all laboratories are comfortable moving to such a small particle size. In those instances, moving from a 5 µm to a 3.5 µm particle column is a good first step. However, depending on the method, this migration might not be appropriate and could result not only in elevated system pressure but also performance loss. Figure 1 shows the chromatograms for abacavir impurities using the original method column, a 3.5 µm C18 column, and the CORTECS Premier C18 5 µm Column.</p><h4><strong>Conclusion&nbsp;</strong></h4><p>CORTECS Premier 5 µm Columns are suitable alternatives for fully porous 5 µm columns for improving validated HPLC methods. Using a CORTECS solid-core stationary phase can allow for a shorter column to be used because of their higher efficiency per unit length. To highlight this, the impurity method for abacavir was migrated from the original fully porous 5 µm, 4.6 x 150 mm column to a CORTECS Premier C18 5 µm, 4.6 x 100 mm Column, as well as a 4.6 x 100 mm 3.5 µm fully porous column. The use of the CORTECS Column achieved comparable separation performance as the original while also exhibiting a shorter analysis time, lower solvent usage, and a better AMGS value.</p>

News from LabRulezLCMS Library - Week 49, 2025

<p><strong>Our Library never stops expanding. What are the most recent contributions to LabRulezLCMS Library in the week of 8th December 2025? Check out new documents from the field of liquid phase, especially HPLC and LC/MS techniques!</strong></p><blockquote><p><span style="font-size:20px;">👉 </span><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/library"><span style="font-size:20px;"><strong>SEARCH THE LARGEST REPOSITORY OF DOCUMENTS ABOUT LCMS AND RELATED TECHNIQUES</strong></span></a></p></blockquote><blockquote><p><strong>👉 Need info about different analytical techniques?</strong> Peek into <a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/library"><strong>LabRulezGCMS</strong></a> or <a target="_blank" rel="noopener noreferrer" href="https://icpms.labrulez.com/library"><strong>LabRulezICPMS</strong></a> libraries.</p></blockquote><p>This week we bring you application notes by <strong>Agilent Technologies </strong>and<strong> Waters Corporation, </strong>technical note by <strong>Shimadzu </strong>and poster by <strong>Thermo Fisher Scientific / ASMS!</strong></p><h3><strong>1. Agilent Technologies: Robust and Reproducible Monitoring of PFAS in Treated Wastewater by Direct Injection on 6495D LC/MS</strong></h3><ul><li>Application note</li><li><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/labrulez-bucket-strapi-h3hsga3/an_pfas_wastewater_lctq_5994_8346en_agilent_c2412e7d84.pdf"><strong>Full PDF for download</strong></a></li></ul><p>PFAS is a class of synthetic chemicals that are resistant to heat, water, grease, and oil. Exposure to this class of chemicals is widespread and their ability to move and persist in the environment makes them difficult to clean up. Found in everyday household and workplace products such as drinking water, food packaging, fish caught from compromised environments, and personal care products is an indication of how widespread the use of PFAS and its contamination in the&nbsp;environment.&nbsp;</p><p>Traditional techniques of analysis to enhance sensitivity incorporate the use of solid phase extraction, which allows enrichment of the sample before injection. Increased awareness of emerging contaminants has necessitated the need for higher throughput methods, some bypassing the sample preparation step, to decrease sample analysis time. Direct injection analysis can save time by removing the need to prepare samples but still providing robustness and reproducibility to justify its capabilities and improved&nbsp;efficiency.</p><h4><strong>Experimental</strong></h4><h5><strong>Instrumentation&nbsp;</strong></h5><p><strong>Liquid chromatography system:&nbsp;</strong></p><ul><li>Agilent 1290 Infinity II Bio-LC High‑Speed Pump (G7132A)&nbsp;</li><li>Agilent 1290 Infinity II Bio-LC Multisampler (G7137B)&nbsp;</li><li>Agilent 1290 Infinity II Multicolumn Thermostat (G7116B)&nbsp;</li></ul><p><strong>Mass spectrometry system:&nbsp;</strong></p><ul><li><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/library?mainauthorItems=10&amp;search=6495D"><strong>Agilent 6495D Triple Quadrupole LC/MS (G6495D)&nbsp;</strong></a></li><li><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/library?mainauthorItems=10&amp;search=Jet+Stream"><strong>Agilent Jet Stream (AJS) Source</strong></a> A PFC free kit, together with a delay column, was also used.</li></ul><h4><strong>Results and discussion&nbsp;</strong></h4><p>The sensitivity of the method was calculated with ten spikes of water at 1&nbsp;ng/L resulting in the method detection limit. The calculated concentration was prior to dilution of methanol and demonstrates that all but three analytes were equal or less than 1 ng/L detection limits, the analytes with greater than 1&nbsp;ng/L MDL were 3:3 FTCA and 8:2 FTSA (Table 6).</p><h4><strong>Conclusion&nbsp;</strong></h4><p>The increased awareness of PFAS globally has meant that regulations are constantly being adopted and larger amounts of samples at lower limits are required. By incorporating the direct injection technique on the Agilent 6495D LC/MS we get a combination of high sample throughput while providing excellent analytical sensitivity. Also, increasing throughput and reducing consumables cost creates increased value in the instrument. The method displays a clean baseline and sensitivity with the observation of 1 ng/L detection in spiked wastewater. Reproducibility and robustness were measured between the concentrations of 0.5 to 100 ng/L on the 6495D LC/MS. The system was able to detect 38 PFAS between 0.25 to 3.4 ng/L with RSD &lt; 20% over 150&nbsp;direct injections, providing confidence in the data for a complex matrix like&nbsp;wastewater.</p><h3><strong>2. Shimadzu: A sustainable analytical approach for detecting extra virgin olive oil adulteration using Nexera™ UC</strong></h3><ul><li>Technical note</li><li><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/labrulez-bucket-strapi-h3hsga3/c190_e341_c488032e81.pdf"><strong>Full PDF for download</strong></a></li></ul><p>Knowledge of the composition of triacylglycerols (TAGs) in vegetable oils is important for dietary and nutritional reasons, due to the influence of the different properties of each fatty acid on the human organism. Specifically, extravirgin olive oil (EVOO) is a popular food ingredient worldwide, and for this reason, detecting economically motivated adulteration is important to protect consumers’ interest and health[1]. According to the latest report from the EU Food Fraud Network (European Union, 2021), olive oil (OO) tops the list of reported adulterated food products. The official methods to assess OO purity and detect the presence of extraneous vegetable oils include the analysis of fatty acids (FAs), triacylglycerols (TAGs) and sterols (Regulation (EU) No 2568/91 and its amendments) [2].&nbsp;</p><p>A variety of chromatographic techniques has been employed for TAGs analysis and separation. High-performance liquid chromatography (HPLC) methods, which use reversed-phase (RP) and silver-ion (Ag) columns for TAGs separation, have been employed either independently or in combination[3]. However, both these approaches have the drawback of relying on toxic organic solvents. The alternative separation technique employed in TAGs analysis is supercritical fluid chromatography (SFC) coupled with a UV detector at very low wavelengths, due to the weak UV absorption of the mobile phase. In this study, a fast, simple and green methodology was optimized to detect intentionally adulterated olive oil with cheaper seed oils at different levels by means of SFC with UV detection, followed by statistical analysis.</p><h4><strong>2. Experimental</strong></h4><h5><strong>2.2 SFC-PDA Nexera™ UC system&nbsp;</strong></h5><p>All experiments were performed on a <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/library?mainauthorItems=1&amp;search=Nexera%E2%84%A2+UC"><strong>Nexera™ UC system</strong></a> (Shimadzu Europa, Germany). The system was equipped with a CBM-20A communication bus module, a DGU-20A5R degasser, an LC-30ADSF CO2 pump, one LC-20ADXR dual plunger parallelflow pump, a Sil-30AC autosampler, a CTO-20AC column oven, a SPD-M20A photodiode array (PDA) detector, and a SFC-30A backpressure regulator (BPR). Chromatograms were recorded using Shimadzu <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/library?mainauthorItems=1&amp;search=LabSolutions"><strong>LabSolution</strong></a> ver. 5.80 software. Four Ascentis Express C18 columns, provided by KGaA (Darmstadt, Germany), were connected in series for TAGs separation. The analytical conditions used are summarized in Table 1.</p><h4><strong>3. Results and discussion&nbsp;</strong></h4><p>Using four C18 columns packed with superficially porous particles, a highly efficient separation of TAGs with an isocratic elution mode was provided, allowed for complete sample TAG elution within 30 min with the conditions used in this method (Figure 1). Peak identification was carried out according to partition number (PN), the published composition of these common vegetable oils and the relative amount of major and minor peaks, and finally taking into account TAGs retention times. For compounds with identical PN, separation was achieved based on the number of unsaturations. The elution order of TAGs was primarily governed by the hydrophobicity of the solutes. As the PN increases, the non-polar character of TAGs becomes more dominant.</p><h4><strong>Conclusions&nbsp;</strong></h4><p>The Nexera™ UC system provided excellent results for assessing TAGs composition in ten different vegetable oils examined in this study employing an SFC-PDA analytical method using isocratic mode and UV detection at 205 nm. This approach does not require any sample preparation and enables analyses to be completed with less waste and less cost compared to traditional methods, making it feasible for routine analyses, while providing reliable quantitative values.&nbsp;</p><p>Quantification of adulterated EVOO was performed by establishing curves based on peak areas of LLL marker versus seed oils concentrations. Statistical analysis using PCA and one-way ANOVA also visually distinguished adulterated EVOO from pure EVOO, and the result was in accordance with the present quantitative method. This fast and environmental method exhibits a huge potential for quality control and authenticity evaluation of EVOO.</p><h3><strong>3. Thermo Fisher Scientific / ASMS: Uncovering biological differences at scale: high-throughput and in-depth plasma proteomics with the Seer Proteograph ONE workflow and Orbitrap Astral Zoom Mass Spectrometer</strong></h3><ul><li>Poster</li><li><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/labrulez-bucket-strapi-h3hsga3/po_393_uncovering_biological_astral_zoom_seer_po393_asms2025_na_en_f697aef9c0.pdf"><strong>Full PDF for download</strong></a></li></ul><p>Plasma proteomics enables minimally invasive biomarker discovery by capturing disease-related molecular signatures. However, its effectiveness is limited by the wide dynamic range of protein concentrations. To address this, we combined the Seer Proteograph ONE workflow with the Orbitrap Astral Zoom mass spectrometer to enable a high-throughput, high-precision platform that delivers deep plasma profiling and actionable insights for large-scale clinical and translational research (Figure 1).</p><h4><strong>Methods:&nbsp;</strong></h4><p>The Seer Proteograph ONE workflow was used to prepare plasma samples from a small disease cohort with matched healthy controls to evaluate its performance and feasibility in detecting biologically meaningful differences. Samples were then separated and analyzed using the <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/398"><strong>Thermo Scientific Vanquish Neo UHPLC system </strong></a>coupled to the <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/1959"><strong>Orbitrap Astral Zoom mass spectrometer</strong></a>, enabling deep and reproducible proteome coverage. Two analytical approaches—a high-throughput method and a Max-ID workflow—were tested to demonstrate the versatility and throughput for comprehensive biomarker discovery in clinical cohort studies.</p><h4><strong>Results:&nbsp;</strong></h4><p>The Seer Proteograph ONE workflow with Orbitrap Astral Zoom mass spectrometer demonstrated that both high-throughput and Max-ID workflow were able to detect differences in biology in diseased states from healthy controls. The high-throughput workflow enabled rapid, reproducible analysis, while the Max-ID approach delivered deeper proteome coverage. The synergy between the Seer Proteograph workflow and Orbitrap Astral Zoom mass spectrometer supports scalable, high-resolution biomarker discovery, making it suitable for large clinical studies and precision medicine applications.</p><h4><strong>Conclusions&nbsp;</strong><span><strong>&nbsp;</strong></span></h4><ul><li>The Seer Proteograph ONE workflow combined with Orbitrap Astral Zoom mass spectrometer identified &gt;10,800 protein groups using ultradeep profiling, compared to &gt;8,200 with the high-throughput method—demonstrating scalable, reproducible plasma proteomics with clear detection of biological differences for biomarker discovery.&nbsp;</li><li>The Protoeograph ONE workflow combined with the Orbitrap Astral Zoom Mass Spectrometer captures exceptional dynamic range of 7-8 orders of magnitude in plasma proteome&nbsp;</li><li>&gt;1,000 differentially abundant proteins detected with biologically relevant dysregulated pathways such as immune signaling or tissue remodeling underscores the complex biology of lung cancer&nbsp;</li><li>Identification of FDA markers as differentially expressed showcases the workflow’s strength for capturing biologically relevant plasma proteins</li></ul><h3><strong>4. Waters Corporation: Improving Throughput and Analytical Greenness in Pharmaceutical Discovery Using Ultrashort (2.1 x 10 mm) HPLC Columns</strong></h3><ul><li>Application note</li><li><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/labrulez-bucket-strapi-h3hsga3/720009074_en_406ea811f9.pdf"><strong>Full PDF for download</strong></a></li></ul><h5><strong>Benefits&nbsp;</strong></h5><ul><li>Up to 60% decrease in analysis time using the ultrashort (2.1 x 10 mm) column</li><li>Lower AMGS metric values indicating improvements in analytical method greenness</li></ul><p>Drug discovery is a fast-paced, high-throughput environment where chemists screen large numbers of samples to determine if a suitable compound has been created. Supporting these efforts from an analytical standpoint using liquid chromatography (LC) or liquid chromatography-mass spectrometry (LC-MS) can present challenges. For many discovery workflows, hundreds if not thousands of samples are analyzed for the determination of drug concentrations in biological matrices, for structural confirmation or for an assessment of purity. Analytically speaking, this means that the number of samples that may be analyzed per unit time, or throughput, is valued more highly than is achieving baseline separation of all components. To maximize throughput, rapid (“ballistic”) gradients can be employed along with short analytical columns.1 Ballistic gradients are designed to run at the highest flow rate possible while using the steepest gradient slope, in terms of percent solvent per column volume (%/VC).2 This allows for the fastest elution off the column possible. Shorter columns are used not only to limit the pressure generated by the column, thereby allowing faster flow rates, but also to reduce the analysis time.&nbsp;</p><p>In this application note, the use of a 2.1 x 10 mm 2.5 µm XSelect™ HSS T3 Column is examined compared to 2.1 x 30 mm and 2.1 x 50 mm columns packed with the same stationary phase. These three columns were used to analyze a full 96-well QuanRecovery™ Plate to simulate the output of a drug discovery environment where multiple samples need to be run as fast as possible. Prior to sample analysis, instrument methods were created to increase throughput by limiting the inter-injection delay. The inter-injection delay time was calculated and recorded. The total analysis time for each column configuration was determined and compared, along with the AMGS. While the loss of efficiency in using a 10 mm column was expected, the shorter column configuration achieved adequate results for a single component sample. Coupling this column with mass spectrometry for peak identification would be sufficient for high-throughput discovery screening where separation quality is not the most important attribute of the analysis, but rather speed is of the highest value.3</p><h4><strong>Experimental</strong></h4><h5><strong>Reversed Phase LC Conditions&nbsp;</strong></h5><ul><li><strong>LC system: </strong><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/191"><strong>ACQUITY™ Premier</strong></a> Binary Solvent Manager with Column Manager, TUV Detector, and<a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/554"><strong> Xevo™ TQ Absolute Mass Spectrometer</strong></a></li><li><strong>Columns:&nbsp;</strong><ul><li><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/1864"><strong>XSelect HSS T3</strong></a>, 2.1 x 50 mm, 2.5 µm (p/n: 186006149)&nbsp;</li><li><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/1864"><strong>XSelect HSS T3</strong></a>, 2.1 x 30 mm, 2.5 µm (p/n: 186006148)&nbsp;</li><li><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/1864"><strong>XSelect HSS T3</strong></a>, 2.1 x 10 mm, 2.5 µm (p/n: 186011466)</li></ul></li><li><strong>Chromatography software:</strong> <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/635"><strong>MassLynx™ V4.1 Software</strong></a></li></ul><h4><strong>Results and Discussion&nbsp;</strong></h4><h5><strong>Instrument Considerations&nbsp;</strong></h5><p>Prior to sample analysis, the system being used was considered. For Waters™ LC systems, there are a few parameters in the inlet method that can be adjusted to speed up the time between injections, or inter-injection delay. This delay comes from the sequence of steps that the system takes to draw the sample and inject it into the flow path of the LC. The parameters that need adjustment are all located in the sample manager panel of the instrument method or inlet method. Figure 1 shows screenshots of the sample manager panel and where the mentioned parameters are located.</p><h4><strong>Conclusion&nbsp;</strong></h4><p>The use of high-throughput LC separations in pharmaceutical discovery allows new lead compounds to be selected quickly and efficiently. This may be achieved using short columns with ballistic gradients. To support these activities 2.1 x 10 mm columns were developed and used to analyze a full 96-well plate of samples. Comparing the results obtained on the 10 mm column to those produced using 30 and 50 mm columns showed a 57–146% higher throughput. Additionally, the use of the 10 mm column was determined to be substantially “greener” as measured by the analytical method greenness scores, with decreases of 40 and 68% relative to 30 and 50 mm length columns.</p>

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