Join us for a fascinating conversation with Dr. Subhoja Chakraborty from the University of Central Florida, whose cutting-edge research targets the global challenge of malaria drug resistance. Dr. Chakraborty shares her journey from structure-based drug design during her PhD to her recent collaborative work repurposing human kinase inhibitors as rapid, selective antimalarials against drug-resistant Plasmodium falciparum strains.<h4>In this episode, you'll learn:</h4><ul><li>How structure-guided approaches reveal potential drug targets, including cysteine proteases like falcipain-2, and kinases implicated in malaria's complex life cycle.</li><li>The power of repurposing kinase inhibitors originally developed for cancer and other diseases, focusing on compound 12, which blocks hemozoin formation and protein kinase 6—key steps in parasite survival.</li><li>Lab techniques such as affinity, gel filtration, and size exclusion chromatography for recombinant protein purification—and how troubleshooting is crucial for high-yield, stable complexes.</li><li>Advances in mass spectrometry for characterizing protein interactions, validating drug targets, and mapping molecular pathways pivotal to malaria therapeutics.</li><li>Tips and lessons for new researchers facing the challenges of sample preparation, complex protocols, and working as part of a collaborative team.</li></ul>Dr. Chakraborty’s insights bridge the gap between basic science and translational drug discovery, offering hope for more effective, targeted malaria treatments in a world where resistance to frontline therapies threatens millions.<h4>Referenced Papers:</h4><ul><li>"Plasmodium falciparum protein kinase 6 and hemozoin formation are inhibited by a type II human kinase inhibitor exhibiting antimalarial activity" (Cell Chemical Biology, 2025)</li><li>"New insights of falcipain 2 structure from Plasmodium falciparum 3D7 strain" (BBRC, 2022)</li><li>"Structure-Based Optimization of Protease−Inhibitor Interactions to Enhance Specificity of Human Stefin‑A against Falcipain‑2 from the Plasmodium falciparum 3D7 Strain" (Biochemistry, 2023)</li></ul>If you’re a student, scientist, or simply passionate about advances in infectious disease research, this episode offers actionable insights, inspiring advice, and a front-row seat to innovation in combating malaria.<h3>Video Transcription</h3><h4>From Structural Biology to Drug Discovery: Chromatography and Mass Spectrometry in Malaria Research</h4><h5>Introduction</h5>In this discussion, Subhoja shares insights into her research journey, focusing on malaria drug discovery and the role of modern analytical techniques in biological and biomedical research. The conversation is aimed primarily at undergraduate students and early-career researchers interested in chemistry, biotechnology, and life sciences.<h5>Research Focus: Malaria Drug Discovery and Kinase Targets</h5>Subhoja is currently involved in malaria drug discovery research at the University of Central Florida, where she has been working since beginning her postdoctoral position two years ago. Her earlier PhD research focused on structure-based drug design in malaria, using a combination of in silico approaches, recombinant protein expression, and X-ray crystallography to determine precise three-dimensional structures of target proteins and their inhibitors.This structural perspective provided a foundation for her current work, which centers on drug discovery through compound screening and repurposing. A recent publication from her laboratory explores the use of repurposed mammalian CDK-like kinase inhibitors as potential antimalarial agents. While such kinase inhibitors are well known in cancer and cardiovascular research, their application to malaria targets represents a novel and promising approach.Kinases are attractive drug targets because of their central role in cell signaling and growth pathways. By targeting specific kinases involved in different stages of the malaria parasite life cycle—whether asexual growth, gametocytogenesis, or differentiation—it may be possible to significantly inhibit parasite growth and progression.<h5>Chromatography in Protein Expression and Purification Workflows</h5>Chromatography plays a critical role throughout Subhoja’s research. Her experience spans from basic chromatography techniques during her early training to advanced protein purification workflows using affinity chromatography, gel filtration (size exclusion chromatography), and ion exchange chromatography.Recombinant proteins are routinely purified using affinity resins such as nickel or cobalt, followed by further purification to remove contaminants. Fast Protein Liquid Chromatography (FPLC) enables compact, stepwise purification workflows suitable for producing proteins for in vitro assays.A recurring challenge in this process is the expression of high-molecular-weight proteins, which often accumulate in insoluble fractions or inclusion bodies. Careful selection of expression vectors, host systems, and induction conditions is therefore essential to maximize yield and solubility.<h5>Integrating Size Exclusion Chromatography into the Workflow</h5>Size exclusion chromatography (SEC) is typically used after affinity purification to further improve protein purity. Following elution with imidazole or glutathione, desalting is required to prevent buffer components from interfering with downstream assays. This is often achieved using desalting columns such as G-25 or PD-10.To remove lower-molecular-weight contaminants, finer SEC media—such as Superdex or Sephacryl columns—are employed. Concentration steps using molecular-weight cut-off filters are then applied to obtain the desired protein concentration for functional studies.These iterative purification and troubleshooting steps are a routine part of protein biochemistry and reflect the importance of methodical optimization and careful validation.<h5>The Role of Mass Spectrometry in Biomolecular Characterization</h5>Mass spectrometry is a key analytical tool in Subhoja’s research pipeline, particularly for target identification and validation. In both malaria and cancer research, MS is used alongside chromatography, immunoprecipitation, and pull-down assays to study protein interactions and molecular recognition events.Affinity-based mass spectrometry enables the identification of binding partners and interactors, whether studying proteins, long non-coding RNAs, or protein complexes. Techniques such as native MS, tandem affinity purification, and proximity labeling (e.g., TurboID-based workflows) provide deeper insights into molecular networks and signaling pathways.These approaches are essential for understanding how candidate drug targets function within complex biological systems.<h5>Sample Preparation Challenges in Biological Research</h5>Sample preparation remains one of the most challenging aspects of biological experimentation. Whole-cell lysates contain proteases, nucleases, and other components that can rapidly degrade target molecules. Preventing degradation requires minimizing preparation time, maintaining low temperatures, and using appropriate inhibitor cocktails.Reproducibility is also critical: biological experiments require multiple replicates, and variability is often unavoidable. Careful handling, protocol optimization, and continuous troubleshooting are essential to ensure reliable results, whether preparing samples for chromatography, mass spectrometry, sequencing, or immunoprecipitation.<h5>Advances in Chromatography and MS for Malaria Research</h5>Modern advances in chromatography and mass spectrometry significantly enhance malaria research by enabling precise target identification, quantification, and functional characterization. Drug discovery workflows begin with construct design and recombinant expression, followed by purification and interaction studies.In malaria research, stage-specific parasite biology requires careful extraction and analysis of proteins from different life cycle stages. Tandem affinity MS, immunoprecipitation, and in vivo validation studies help confirm target relevance and therapeutic potential.Recent work on repurposed kinase inhibitors has shown promising results, including inhibition of hemozoin formation—a key detoxification pathway for the malaria parasite—highlighting the potential of such compounds for further development.<h5>Malaria, Drug Resistance, and Global Impact</h5>Malaria remains a major global health burden, with over 600,000 deaths annually and widespread drug resistance complicating treatment. Artemisinin resistance, particularly associated with mutations in the K13 propeller domain, has driven the search for new targets and therapies.During her PhD, Subhoja focused on falcipain-2, a cysteine protease involved in hemoglobin degradation within the parasite. This pathway is critical for parasite survival and has emerged as a promising drug target. Her work revealed that falcipain-2 operates within a larger protein complex responsible for hemoglobin processing and amino acid release.Understanding these molecular mechanisms is essential for developing robust, stage-specific antimalarial strategies.<h5>Advice for Early-Career Researchers</h5>For researchers just starting out, Subhoja emphasizes the importance of hands-on experience. Working directly with cells, lysates, and analytical tools is essential for truly understanding experimental systems. Failure is an inherent part of research, and perseverance is key.Motivation, teamwork, careful sample handling, and thorough preparation all contribute to long-term success. Reading extensively, critically evaluating one’s own work, and appreciating incremental progress are vital aspects of a sustainable research career.Every successful experiment—no matter how small—represents meaningful progress and contributes to the broader goals of science and medicine.<h5>Closing Remarks</h5>The discussion highlights how interdisciplinary approaches combining chromatography, mass spectrometry, structural biology, and biochemistry are driving advances in malaria drug discovery. Through careful experimental design, analytical rigor, and collaborative teamwork, researchers can address complex biological challenges and contribute to global health solutions.<blockquote>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.</blockquote><blockquote><h4>Concentrating on Chromatography Podcast</h4>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!You can find Concentrating on Chromatography Podcast in podcast apps:<ul><li><a target="_blank" rel="noopener noreferrer" href="https://open.spotify.com/show/1wZg67rCjoGju4yhqxI3tL">Spotify</a></li><li><a target="_blank" rel="noopener noreferrer" href="https://podcasts.apple.com/tz/podcast/concentrating-on-chromatography/id1788429185">Apple podcast</a></li><li><a target="_blank" rel="noopener noreferrer" href="https://podscan.fm/podcasts/concentrating-on-chromatography">podscan</a></li></ul>and on <a target="_blank" rel="noopener noreferrer" href="https://www.youtube.com/@ChromatographyTalk/videos">YouTube channel</a></blockquote>

Affinity, Gel Filtration, Size Exclusion Chromatography: Repurposing Kinase Inhibitors for Malaria

In the week of February 9, the following webinars await you in the field of liquid phase and especially HPLC and LC/MS.<blockquote><h4><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/webinars">👉 DETAILS AND REGISTRATION IN THE WEBINARS SECTION</a></h4>👉 Search and filter in the largest global database with over 5 000 GC, LC, MS and spectroscopy webinars.</blockquote><h5>1. SelectScience: High-Throughput Stability Screening Strategies for Antibody Formulation</h5><ul><li>Tu, 10.2.2026 17:00 CET</li><li><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/webinar/5807">Registration</a></li></ul>Learn how high-throughput DLS/SLS and rapid-screening DSC accelerate stability assessment of high-concentration antibody formulations, enabling faster, data-driven biologics development.<h5>2. Phenomenex: Big Scale, Big Wins – Prep Chromatography Explained</h5><ul><li>We, 11.2.2026 10:00 CET</li><li><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/webinar/5793">Registration</a></li></ul>Learn how to scale analytical methods to preparative HPLC, optimize loading capacity, and understand the limits of preparative columns for pharmaceutical applications.<h5>3. ALS Czech Republic: PFAS in Food &amp; Food Contact Material</h5><ul><li>We, 11.2.2026 15:00 CET</li><li><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/webinar/5816">Registration</a></li></ul>Get a practical overview of PFAS in food and food contact materials, including EU and US regulations, key analytical challenges, and reliable PFAS testing strategies.<h5>4. New Food Magazine: The Science of Next-Gen Ingredients – Fermentation, Formulation and Function</h5><ul><li>We, 11.2.2026 16:00 CET</li><li><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/webinar/5720">Registration</a></li></ul>Explore how fermentation-driven innovation is transforming functional food ingredients and how advanced analytics optimize flavour, functionality, and stability.<h5>5. SCIEX: Accurate Mass Fundamentals – Interpreting and Applying Your Data</h5><ul><li>We, 11.2.2026 19:00 CET</li><li><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/webinar/5772">Registration</a></li></ul>Session 3 focuses on interpreting and applying accurate mass data to confirm compound identity, move beyond basic quantitation, and troubleshoot results for confident reporting.<h5>6. Agilent Technologies: Process Analytical Techniques – Online HPLC for Real-Time Monitoring and Control of Bioprocesses</h5><ul><li>Th, 12.2.2026 06:30 CET</li><li><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/webinar/5834">Registration</a></li></ul>Discover how PAT HPLC enables near-real-time monitoring of critical quality attributes in bioprocessing, with a case study on charge-variant control by cation-exchange chromatography.<h5>7. Thermo Fisher Scientific: Introducing the Orbitrap Excedion Pro Hybrid MS</h5><ul><li>Th, 12.2.2026 11:00 CET</li><li><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/webinar/5889">Registration</a></li></ul>Discover the new Orbitrap Exploris Pro with expanded ETD/EThcD capabilities for confident biopharmaceutical characterization, including intact proteins, PTMs, ADCs, and large biomolecules.<h5>8. Waters Corporation: Planning Your NuGenesis Upgrade – Insights and Best Practices for a Smooth Transition</h5><ul><li>Th, 12.2.2026 19:00 CET</li><li><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/webinar/5833">Registration</a></li></ul>Learn how to plan a successful NuGenesis upgrade, transition to Windows 11, and unlock new capabilities such as dashboards for real-time operational insights.<h5>9. Thermo Fisher Scientific: Comprehensive Analytical Strategies for Peptide Therapeutics and GLP-1 Agonists with Agilent</h5><ul><li>Th, 12.2.2026 19:00 CET</li><li><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/webinar/5814">Registration</a></li></ul>Explore analytical workflows for peptide therapeutics, including method development, peptide mapping, GLP-1 QC, and LC-MS strategies across Agilent platforms.<h5>10. Agilent Technologies: Moving from R&amp;D and Limited QC on a UV-Vis-NIR Instrument to Large-Scale QC Using an Autosampler</h5><ul><li>Th, 12.2.2026 20:00 CET</li><li><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/webinar/2104">Registration</a></li></ul>This webinar covers practical aspects of adding and using an autosampler to maximize UV-Vis-NIR QC workflows at scale.<h5>11. Agilent Technologies: LC Method Transfer – Hidden Challenges &amp; Absolute Solution</h5><ul><li>Fr, 13.2.2026 06:30 CET</li><li><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/webinar/5787">Registration</a></li></ul>Discover why LC method transfer between legacy and modern systems is challenging, which hidden parameters affect retention and peak shape, and how to achieve robust, reliable results.

Webinars LabRulezLCMS Week 07/2026

Charge detection mass spectrometry (CDMS) allows direct mass determination of individual ions and is increasingly used to study heterogeneous biological samples. This work demonstrates the use of Orbitrap-based CDMS/Direct Mass Technology (DMT) for quantitative analysis of transthyretin (TTR) tetramer samples below 100 kDa, extending CDMS beyond its traditional qualitative role.DMT resolved wild-type and C-terminally modified TTR homotetramers, as well as hybrid tetramers, enabling kinetic analysis of subunit exchange and stability. The approach also quantified thyroxine binding to TTR variants, revealing differences in binding affinity linked to C-terminal modification. By separating overlapping m/z signals through charge measurement, CDMS enables accurate mass and abundance determination, highlighting its potential for quantitative analysis of complex protein systems.<blockquote><h4>The original article</h4><h4><a target="_blank" rel="noopener noreferrer" href="https://pubs.acs.org/doi/10.1021/acs.analchem.5c05771">Dissecting Heterogeneous Populations of Protein-Complex Samples Using Direct Mass Technology</a></h4>Robert L. Rider, Jared Hampton, Zhenyu Xi, Carter Lantz, Sangho D. Yun, Weijing Liu, Rosa Viner, Arthur Laganowsky, and David H. Russell*Anal. Chem. 2025, 97, 49, 27057–27063<a target="_blank" rel="noopener noreferrer" href="https://doi.org/10.1021/acs.analchem.5c05771">https://doi.org/10.1021/acs.analchem.5c05771</a><h6>licensed under <a target="_blank" rel="noopener noreferrer" href="https://creativecommons.org/licenses/by/4.0/">CC-BY 4.0</a></h6></blockquote>Selected sections from the article follow. Formats and hyperlinks were adapted from the original.Transthyretin (TTR) is a homotetrameric transport protein that circulates in plasma and cerebrospinal fluid, delivering thyroxine (T4) and retinol-binding protein–vitamin A complexes. <a href="javascript:void(0);">(1)</a> The stability of the TTR tetramer is central to its physiological role because dissociation into monomers can initiate misfolding and amyloid formation, leading to systemic or hereditary transthyretin amyloidosis. <a href="javascript:void(0);">(2)</a> Subunit exchange between wild-type (WT) and variant TTR proteoforms, including disease-associated mutations such as V30M and V122I, have been implicated in amyloid progression by generating hybrid tetramers (tetramers containing WT and mutant subunits) with altered stabilities. <a href="javascript:void(0);">(3,4)</a> Ligand binding, particularly at the two thyroxine-binding sites located at the dimer–dimer interface, can kinetically stabilize the tetramer and modulate amyloidogenicity. <a href="javascript:void(0);">(5,6)</a> Accurate measurement of both subunit exchange kinetics and ligand binding stoichiometry is therefore critical for elucidating the TTR dynamics and stability.Affinity or sequence tags are widely employed in protein expression, purification, or detection. <a href="javascript:void(0);">(7,8)</a> While these tags are often assumed to be inert, their influence on protein structure and dynamics are rarely examined in detail. <a href="javascript:void(0);">(9,10)</a> Protein tags at the N- and C-terminus of TTR have been shown to have differing gas phase stabilities from those of WT-TTR. <a href="javascript:void(0);">(11)</a> The C-terminus is of particular interest because this region participates in the dimer–dimer interface that governs tetramer stability. <a href="javascript:void(0);">(11,12)</a> Characterizing how the C-terminal tag (CT) (-ASGENLFYQ) affects TTR’s solution stability and ligand binding is not only relevant for understanding TTR dynamics but also provides an example of how expression tags can alter protein dynamics. <a href="javascript:void(0);">(13)</a>Native mass spectrometry (nMS) has been invaluable for characterizing protein complexes, <a href="javascript:void(0);">(14)</a> yet conventional nMS often struggles with heterogeneous samples where overlapping charge state distributions and adduct heterogeneity limit resolution and quantitation. <a href="javascript:void(0);">(15)</a> Charge detection mass spectrometry (CDMS) addresses these limitations by independently measuring the charge and m/z of individual ions, enabling the direct determination of molecular mass and abundance. Development of CDMS has largely focused on achieving higher mass resolution <a href="javascript:void(0);">(16)</a> and extending measurements toward assemblies into the GDa range. <a href="javascript:void(0);">(17,18)</a> However, there is untapped utility for CDMS experiments other than mass and proteoform determination. Jordan et al. showed the capability to assess conformational heterogeneity of mAb aggregates using the added charge dimension that CDMS provides. <a href="javascript:void(0);">(19)</a> The current work demonstrates that CDMS can separate proteoforms with overlapping m/z values based on charge and quantify their relative abundances in complex mixtures. While nMS is already a highly quantitative technique, our results establish CDMS as an equally powerful tool for quantitative analysis in heterogeneous systems. <a href="javascript:void(0);">(20,21)</a>Here, we apply Orbitrap-based CDMS/Direct Mass Technology (DMT) using the selective temporal overview of resonant ions (STORI) approach <a href="javascript:void(0);">(22,23)</a> to quantitatively compare WT-TTR and CT-TTR, focusing on two biologically relevant properties: tetramer stability assessed via subunit exchange kinetics and ligand-binding affinity. Conventional nMS cannot fully resolve the overlapping charge states of WT- and CT-TTR or their ligand-bound states. However, DMT can resolve these species by directly measuring the mass (m/z × charge), enabling quantitation of all proteoforms. The data reveal that the CT tag alters tetramer stability and thyroxine-binding affinity, demonstrating the structural sensitivity of TTR to modifications at its C-terminus. More broadly, this work demonstrates the impact that protein tags can have on native protein interactions and highlights the broader utility of quantitative CDMS for probing heterogeneous biological samples.<h4>Experimental Section</h4><h5>Data Collection</h5>All experiments were conducted on a <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/560">Thermo Scientific Q-Exactive UHMR</a> with added DMT capabilities (Bremen, Germany). Before DMT, mass spectra were collected at various resolving powers (6–200k) for each sample, with the instrument parameters reported in the Supporting Information (<a target="_blank" rel="noopener noreferrer" href="https://pubs.acs.org/doi/suppl/10.1021/acs.analchem.5c05771/suppl_file/ac5c05771_si_001.pdf">Table S1</a>). For DMT experiments, the trapping gas pressure in the HCD cell was reduced to 0.3–0.8 to attenuate the signal intensity to a single ion level, as well as decreasing the UHV pressure to assist ion retention through the entire transient of Orbitrap analysis. We observed no significant difference between mass spectra collected at various HCD cell pressures (Supporting Information, <a target="_blank" rel="noopener noreferrer" href="https://pubs.acs.org/doi/suppl/10.1021/acs.analchem.5c05771/suppl_file/ac5c05771_si_001.pdf">Figure S1</a>). For DMT collection, automated ion control (AIC) and 100% target density were used with 200k resolving power.<h4>Results and Discussion</h4>CDMS has emerged as a powerful tool for analyzing heterogeneous biomolecular samples, enabling accurate, direct mass determination by simultaneously measuring the charge and m/z for individual ions. While CDMS has been widely applied for qualitative analyses, its potential for quantitative and less than MDa applications remains underexplored. <a target="_blank" rel="noopener noreferrer" href="https://pubs.acs.org/doi/10.1021/acs.analchem.5c05771#fig1">Figure 1</a>A shows the theoretical mass spectrum of WT-TTR (14+ to 16+) and CT-TTR (15+ to 17+) homotetramers, where the two proteoforms become increasingly resolved as the charge states increase (&lt;3900 m/z). <a target="_blank" rel="noopener noreferrer" href="https://pubs.acs.org/doi/10.1021/acs.analchem.5c05771#fig1">Figure 1</a>B zooms in on the 14+ (WT) and 15+ (CT) charge states, highlighting their strong overlap, which prevents accurate deconvolution of the proteoforms by conventional methods. <a target="_blank" rel="noopener noreferrer" href="https://pubs.acs.org/doi/10.1021/acs.analchem.5c05771#fig1">Figure 1</a>C displays theoretical distributions for 0, 1, and 2 T4 bound states of both WT- and CT-TTR tetramers, where &lt;3900 m/z has observable separation between all proteoforms. However, for the 14+ and 15+ charge states of WT- and CT-TTR, respectively, the 0 T4- and 1 T4-bound populations overlap (<a target="_blank" rel="noopener noreferrer" href="https://pubs.acs.org/doi/10.1021/acs.analchem.5c05771#fig1">Figure 1</a>D). Furthermore, commonly adducted species (Na+, K+, and Zn2+) observed in experimental spectra broaden these distributions, making it increasingly difficult to distinguish and deconvolute the proteoforms (see <a target="_blank" rel="noopener noreferrer" href="https://pubs.acs.org/doi/suppl/10.1021/acs.analchem.5c05771/suppl_file/ac5c05771_si_001.pdf">Figure S2</a>). Here, we employ Orbitrap-based CDMS/DMT to overcome this m/z overlap to resolve and quantify hybrid tetramer formation and T4 binding.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Anal_Chem_2025_97_49_27057_27063_Figure_1_A_Theoretical_mass_spectra_of_WT_TTR_and_CT_TTR_homotetramers_47232849d9.jpg" alt="Anal. Chem. 2025, 97, 49, 27057–27063: Figure 1. (A) Theoretical mass spectra of WT-TTR and CT-TTR homotetramers. (B) Zoomed-in view of the 14+ WT-TTR and 15+ CT-TTR distributions to show the large overlap of the proteoforms. (C) Theoretical mass spectra of WT-TTR and CT-TTR homotetramers with thyroxine (T4) binding. (D) Zoomed-in view of the 14+ WT-TTR and 15+ CT-TTR distributions where the 0 and 1 T4 have overlapping distributions. These theoretical distributions do not contain any commonly adducted species (Na+, K+, Zn2+), which broaden the distributions and create more overlap even for the proteoforms in the range 3300–3900 m/z (see Figure S2)." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Anal_Chem_2025_97_49_27057_27063_Figure_1_A_Theoretical_mass_spectra_of_WT_TTR_and_CT_TTR_homotetramers_47232849d9.jpg 187w," sizes="100vw" width="1417" height="1182"><h5>Thyroxine Binding to TTR Homotetramers</h5>Thyroxine is the less active form of a thyroid hormone important for metabolism that binds to TTR for transport throughout plasma and cerebral spinal fluid. <a href="javascript:void(0);">(31)</a> Turnover of T4 into T3 (active) occurs after dissociation, where it can then modulate gene expression via binding to nuclear receptors. <a href="javascript:void(0);">(32)</a> The TTR tetramer gains substantial stability as it binds up to 2 T4 at the tetramer interface, decreasing tetramer dissociation and SUE. <a href="javascript:void(0);">(33)</a> This has been shown previously to decrease the amyloidogenic rate of TTR, which led to tafamidis (similar in structure to T4) to be designed and is currently the only drug that is approved for clinical treatment of TTR amyloidosis. <a href="javascript:void(0);">(34)</a> Measuring the difference in binding affinity between TTR proteoforms may provide insight into regions of TTR or TTR intermolecular/intramolecular interactions that are important for binding of small molecules such as tafamidis and T4.DMT was further applied to quantify T4 binding to WT- and CT-TTR homotetramers, highlighting the technique’s utility in probing protein–ligand interactions. <a target="_blank" rel="noopener noreferrer" href="https://pubs.acs.org/doi/10.1021/acs.analchem.5c05771#fig3">Figure 3</a>A shows a representative mass spectrum of TTR homotetramers in the presence of T4. While ligand-bound species can be observed, homotetramers cannot be confidently resolved across the entire 3000–5000 m/z range. By leveraging the charge-resolving capabilities of DMT, we achieve separation of the homotetramers (<a target="_blank" rel="noopener noreferrer" href="https://pubs.acs.org/doi/10.1021/acs.analchem.5c05771#fig3">Figure 3</a>B,C) and the 0, 1, and 2 ligand-bound states. The 2D plot clearly shows the gain in resolution achieved when charge is simultaneously measured with m/z by separating the 14+ and 15+ charge states for WT and CT, respectively, in the range 3900–4200 m/z. Additionally, using ion mobility does not provide the same kind of 2D resolution due to the similarity in arrival times for the homotetramer proteoforms, as evidenced by <a target="_blank" rel="noopener noreferrer" href="https://pubs.acs.org/doi/suppl/10.1021/acs.analchem.5c05771/suppl_file/ac5c05771_si_001.pdf">Figures S4 and S5</a> (see the Supporting Information). These data provide evidence that when ion mobility is able to separate out species that overlap in m/z yet differ in mobility, CDMS could be an alternative or used complementarily since the species likely also differ in charge.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Anal_Chem_2025_97_49_27057_27063_Figure_3_A_Mass_spectra_of_WT_TTR_and_CT_TTR_homotetramers_with_thyroxine_binding_61b1e98a94.jpg" alt="Anal. Chem. 2025, 97, 49, 27057–27063: Figure 3. (A) Mass spectra of WT-TTR and CT-TTR homotetramers with thyroxine binding. Ligand binding can be resolved, but homotetramers cannot be confidently identified. Charge states labeled are for WT; CT is always one charge state higher at the same m/z range. (B) DMT heatmap resolving WT-TTR and CT-TTR homotetramers with the additional measurement of charge. (C) Deconvoluted mass spectrum from DMT analysis. Both homotetramers and their ligand binding are resolved, and fit for analysis is shown in red. (D) Mole fraction of each homotetramer and their thyroxine binding species. Error bars represent the standard deviation of replicates (n = 3). The significance for each ligand state is in respect to the left adjacent state. *p &lt; 0.05." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Anal_Chem_2025_97_49_27057_27063_Figure_3_A_Mass_spectra_of_WT_TTR_and_CT_TTR_homotetramers_with_thyroxine_binding_61b1e98a94.jpg 181w," sizes="100vw" width="1266" height="1094"><h4>Conclusion</h4>This work demonstrates that quantitatively, Orbitrap-based CDMS/DMT can determine differences in protein-complex stability and ligand binding. By directly comparing WT- with CT-TTR, we show that the CT tag accelerates tetramer dissociation while enhancing T4 binding affinity. These results indicate that the C-terminus, located at the dimer–dimer interface, plays a more significant role in TTR stability and ligand recognition than previously appreciated. <a href="javascript:void(0);">(12)</a> Even the addition of a short peptide sequence perturbs noncovalent interactions at the interface, likely altering solvent accessibility, and the dynamics of the thyroxine binding channel. <a href="javascript:void(0);">(37,54)</a> Such findings underscore the importance of evaluating how seemingly minor sequence modifications, such as affinity tags, can influence fundamental biophysical properties.Beyond TTR, this work positions quantitative CDMS as a broadly applicable strategy for analyzing heterogeneous protein systems, where charge domain separation overcomes the resolution limits of m/z domain measurements in traditional nMS experiments. While much of the field has emphasized extending CDMS to ultrahigh masses and maximal resolution, <a href="javascript:void(0);">(16,18)</a> our results highlight the underexplored potential of applying the method in the 1000–10,000 m/z range common to nMS experiments. This capability is directly relevant to heterogeneous membrane protein complexes, which often display broad distributions of oligomeric states, PTMs, lipid, and ligand adducts that complicate spectra. <a href="javascript:void(0);">(48,55)</a> Similarly, mAbs can oligomerize and exhibit mass heterogeneity from variable glycosylation, affecting pharmacokinetics, effector function, and stability. <a href="javascript:void(0);">(19)</a> CDMS may resolve and quantify such proteoforms in a single experiment without the need for charge reduction or chemical derivatization. <a href="javascript:void(0);">(48,56,57)</a>

Dissecting Heterogeneous Populations of Protein-Complex Samples Using Direct Mass Technology

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Organomation, founded in 1959, designs and manufactures high-quality nitrogen evaporators and extraction systems. Known for innovation and durability, their lab instruments are used globally for efficient sample preparation with strong customer support.

Organomation

ECP2050 Preparative Pump

Preparative HPLC pump with flow-rate ranges of 0.001 to 50 ml/min. 

<div style="display:block;" aria-labelledby="tab_item-0">This pump works as an isocratic pump and together with a gradient box also as a gradient pump.These powerful and durable pumps are suitable for preparative applications in low- and high-pressure liquid chromatography across the chemical industry. They are designed with 2 pump heads connected in parallel with a piston diameter of 3/8”.Many improvements make these pumps more reliable, including a new learning algorithm for pulsation suppression and a leakage sensor. The pumps can operate in two modes, i.e. using constant pressure or the newly added option of constant flow rate. New material versions have been added-in beyond to stainless steel A316L, also Hastelloy, titanium and PEEK for biocompatible applications.<h4>Gradient function</h4>These pumps work as isocratic pumps, and, together with ECOM gradient boxes, they also work as gradient pumps. Gradient boxes ECB2007, ECB2007PC are equipped with a four-way gradient mixing valve and must be ordered together with the pump. These sophisticated units allow for achieving a precise low-pressure gradient, i.e. gradual changes of solvent composition by mixing up to four liquids at the pump‘s entry. The gradient profile can be defined via a computer or manually using a display and a keypad. Without the use of a gradient box, the pump works as isocratic, with the option of one solvent and the composition of the mobile phase being chosen by the user.Customers can use the pistons‘ back-washing function, after working, for example, with a buffered mobile phase.<h4>Seals</h4>All pumps are delivered with GFP (PTFE) seals by default. You can order the pumps with UHMW-PE seals, which are considered the optimal recommended choice.<h4>Software support</h4>The pumps are supported by ECOMAC and Clarity software.<h3>Main features and benefits</h3><ul><li>All models include a display and keyboard for manual control</li><li>&nbsp;Precise low-pressure gradient mixing (when connected with a gradient module)</li><li>Very good durability and reliability with proper maintenance</li><li>Extended number of wetted material versions – not only stainless steel but also Hastelloy, titanium and PEEK for biocompatible applications</li><li>Piston back-washing function for work with buffered or aggressive mobile phases</li><li>New learning algorithm for pulsation suppression</li><li>Integrated leakage sensor</li><li>Heating unit for pump heads available</li><li>Custom pump modifications of request</li></ul>This pump is equipped with the Pressure Compensation Learning algorithm. Thanks to this smart adaptive process, the pump regulates the rotation speed of the camshaft and measures its impact on pressure pulsation to minimize the output pulsation as much as possible. The algorithm, due to its adaptive capacity, is applicable for many combinations of pump working conditions (solvents, columns, etc.).<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/ECOM_ECP_2200_Preparative_Pump_5_b84832f1e8.jpg" alt="ECOM: ECP2050 - Preparative Pump - Pressure Compensation Learning algorithm " srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_ECOM_ECP_2200_Preparative_Pump_5_b84832f1e8.jpg 188w," sizes="100vw" width="700" height="580"><h3>Optional configurations/variants</h3>Pump head heating unit, see the accessories shown below. In case you would like this function for your pump, add also the heating unit to&nbsp;your cart. (Also can be found in the Accessories product category).<h5>PN / Wetted parts of pumping block</h5><ul><li>ACCH000X / Hastelloy</li><li>ACCP000X /<span style="-webkit-text-stroke-width:0px;display:inline !important;float:none;font-style:normal;font-variant-caps:normal;font-variant-ligatures:normal;font-weight:400;letter-spacing:normal;orphans:2;text-align:start;text-decoration-color:initial;text-decoration-style:initial;text-decoration-thickness:initial;text-indent:0px;text-transform:none;white-space:normal;widows:2;word-spacing:0px;"> PEEK</li><li>ACC0000X / Stainless steel</li><li>ACCT000X / Titanium</li></ul><h4>Parameters:</h4><ul><li>Flow rate: 0.001 – 50 ml/min</li><li>Maximum operating pressure: 30 MPa (4351 psi)</li><li>Flow rate setting: 0.1 ml/min steps</li><li>Repeatability of flow rate adjusting: ± 0,5 %</li><li>Accuracy of flow rate setting: ± 2 %</li><li>Wetted materials: Stainless steel or Hastelloy or Titanium or PEEK + PEEK, TefzelTM, PE, ceramics, seals&nbsp;</li><li>Communication: RS232, Ethernet (LAN), USB, Remote digital I/O</li><li>Power supply: 100 240V 50/60Hz 250VA</li><li>Dimensions W x H x D: 280 x 135 x 498 mm (11.02 x 5.12 x 18.23 in)</li><li>Weight: 12 kg (26,5 lb)</li><li>Output capillary outer diameter: 1/16”</li><li>Upper pressure limit (MPa): 0,1 – 30 (4351PSI)</li><li>Precision of pressure measurement: ± 2%</li><li>Supported Gradient Box: ECB2005, ECB2005PC</li><li>Pressure Compensation Learning: yes&nbsp;</li></ul></div>

ECOM ECP2100 Preparative Pump

 Preparative HPLC pump with a flow-rate range up to 100 ml/min. 

<div style="display:block;" aria-labelledby="tab_item-0">Innovated pumps ECP2100 work as isocratic pumps and together with a gradient box also as a gradient pump. These powerful and durable pumps are suitable for preparative applications in low- and high-pressure liquid chromatography across the chemical industry. They are designed with 2 pump heads connected in parallel with a piston diameter of 3/8”.Many improvements make these pumps more reliable, including a new learning algorithm for pulsation suppression and a leakage sensor. New material versions have been added-in, beyond to stainless steel A316L, also Hastelloy, titanium and PEEK for biocompatible applications.The pumps can operate in two modes, i.e. using constant pressure or using the newly added option of constant flow rate. The ECP2100 pump now has an innovated spring-loaded outlet check-valve.<h4>Gradient function</h4>These pumps work as isocratic pumps, and, together with ECOM gradient boxes, they also work as gradient pumps. Gradient boxes ECB2007, ECB2007PC are equipped with a four-way gradient mixing valve and must be ordered together with the pump. These sophisticated units allow for achieving a precise low-pressure gradient, i.e. gradual changes of solvent composition by mixing up to four liquids at the pump‘s entry. The gradient profile can be defined via a computer or manually using a display and a keypad. Without the use of a gradient box, the pump works as isocratic, with the option of one solvent and the composition of the mobile phase being chosen by the user.Customers can use the pistons‘ back-washing function, after working, for example, with a buffered mobile phase.<h4>Seals</h4>All pumps are delivered with GFP (PTFE) seals by default. You can order the pumps with UHMW-PE seals, which are considered the optimal recommended choice.<h4>Software support</h4>The pumps are supported by ECOMAC and Clarity software.<h3>Main features and benefits</h3><ul><li>All models include a display and keyboard for manual control</li><li>Precise low-pressure gradient mixing (when connected with a gradient module)</li><li>Very good durability and reliability with proper maintenance</li><li>Extended number of wetted material versions – not only stainless steel but also Hastelloy, titanium and PEEK for biocompatible applications</li><li>Piston back-washing function for work with buffered or aggressive mobile phases</li><li>New learning algorithm for pulsation suppression</li><li>Integrated leakage sensor</li><li>Heating unit for pump heads available</li><li>Custom pump modifications of request</li></ul>This pump is equipped with the Pressure Compensation Learning algorithm. Thanks to this smart adaptive process, the pump regulates the rotation speed of the camshaft and measures its impact on pressure pulsation to minimize the output pulsation as much as possible. The algorithm, due to its adaptive capacity, is applicable for many combinations of pump working conditions (solvents, columns, etc.).<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/ECOM_ECP_2200_Preparative_Pump_5_b84832f1e8.jpg" alt="ECOM: ECP2100 - Preparative Pump - Pressure Compensation Learning algorithm " srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_ECOM_ECP_2200_Preparative_Pump_5_b84832f1e8.jpg 188w," sizes="100vw" width="700" height="580"><h3>Optional configurations/variants</h3>Pump head heating unit, see the accessories shown below. If you would like this function for your pump, add the heating unit to&nbsp;your cart. (Also can be found in the Accessories product category).PN / Wetted parts of pumping block<ul><li>ACCH000X / Hastelloy</li><li>ACCP000X /<span style="-webkit-text-stroke-width:0px;display:inline !important;float:none;font-style:normal;font-variant-caps:normal;font-variant-ligatures:normal;font-weight:400;letter-spacing:normal;orphans:2;text-align:start;text-decoration-color:initial;text-decoration-style:initial;text-decoration-thickness:initial;text-indent:0px;text-transform:none;white-space:normal;widows:2;word-spacing:0px;"> PEEK</li><li>ACC0000X / Stainless steel</li><li>ACCT000X / Titanium</li></ul><h4>Parameters:</h4><ul><li>Flow rate: 0.1 – 100 ml/min</li><li>Maximum operating pressure: 30 MPa (4351 psi)</li><li>Flow rate setting: 0.001 ml/min steps</li><li>Repeatability of flow rate adjusting: ± 0,5 %</li><li>Accuracy of flow rate setting: ± 2 %</li><li>Communication: RS232, Ethernet (LAN), USB, Remote digital I/O</li><li>Power supply: 100 240V 50/60Hz 250VA</li><li>Dimensions W x H x D: 280 x 135 x 498 mm (11.02 x 5.12 x 18.23 in)</li><li>Weight: 12 (26,5 lb)</li><li>Output capillary outer diameter: 1/16”</li><li>Upper pressure limit (MPa): 1– 30 (4351PSI)</li><li>Precision of pressure measurement: ± 2%</li><li>Supported Gradient Box: ECB2005, ECB2005PC</li><li>Display, keypad: yes&nbsp;</li><li>Pressure Compensation Learning: yes</li></ul></div>

ECOM ECP2300 Preparative Pump

Powerful and durable pumps for preparative applications in low- and high-pressure liquid chromatography, designed with 2 pump heads connected in parallel

<div style="display:block;" aria-labelledby="tab_item-0">Powerful and durable pumps suitable for preparative applications in low- and high-pressure liquid chromatography across the chemical industry. An extended&nbsp;number of wetted material versions – not only stainless steel but also Hastelloy, titanium, and PEEK.&nbsp;ECP2300 are designed with 2 pump heads connected in parallel with a piston diameter of 3/8”.Many improvements make these pumps more reliable, including a new learning algorithm for pulsation suppression and a leakage sensor. The pumps can operate in two modes, i.e. using constant pressure or using the newly added option of constant flow rate.<h4>Gradient function:&nbsp;</h4>These pumps work as isocratic pumps, and, together with ECOM gradient boxes, they also work as gradient pumps. Gradient boxes ECB2005, and ECB2005PC are equipped with a four-way gradient mixing valve and must be ordered together with the pump. These sophisticated units allow for achieving a precise low-pressure gradient, i.e. gradual changes of solvent composition by mixing up to four liquids at the pump‘s entry. The gradient profile can be defined via a computer or manually using a display and a keypad. Without the use of a gradient box, the pump works as isocratic, with the option of one solvent and the composition of the mobile phase being chosen by the user.Customers can use the pistons‘ back-washing function, after working, for example, with a buffered mobile phase.<h4>Seals:&nbsp;</h4>All pumps are delivered with GFP (PTFE) seals by default. You can order the pumps with UHMW-PE seals, which are considered the optimal recommended choice.<h4>Software support:&nbsp;</h4>The pumps are supported by ECOMAC and <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/999">Clarity software</a>.<h3>Features and Benefits</h3><ul><li>All models include a display and keyboard for manual control</li><li>Precise low-pressure gradient mixing (when connected with a gradient module)</li><li>Very good durability and reliability with proper maintenance</li><li>Extended number of wetted material versions – not only stainless steel but also Hastelloy, titanium and PEEK for biocompatible applications</li><li>Piston back-washing function for work with buffered or aggressive mobile phases</li><li>New learning algorithm for pulsation suppression</li><li>Integrated leakage sensor</li><li>Custom pump modifications of request</li></ul>This pump is equipped with the Pressure Compensation Learning algorithm. Thanks to this smart adaptive process, the pump regulates the rotation speed of the camshaft and measures its impact on pressure pulsation to minimize the output pulsation as much as possible. The algorithm, due to its adaptive capacity, is applicable for many combinations of pump working conditions (solvents, columns, etc.).This pump is equipped with the Pressure Compensation Learning algorithm. Thanks to this smart adaptive process, the pump regulates the rotation speed of the camshaft and measures its impact on pressure pulsation to minimize the output pulsation as much as possible. The algorithm, due to its adaptive capacity, is applicable for many combinations of pump working conditions (solvents, columns, etc.).Service videos -Seals replacement and&nbsp;Valve replacement :&nbsp;<a target="_blank" rel="noopener noreferrer" href="https://www.ecomsro.com/support/service-videos">https://www.ecomsro.com/support/service-videos</a><h4>Parameters:</h4><ul><li>Flow rate: 0.001 – 300 ml/min</li><li>Maximum operating pressure: 15 MPa (2176 psi)</li><li>Flow rate setting: 0.001 ml/min steps</li><li>Repeatability of flow rate adjusting: ± 0.5 %</li><li>Accuracy of flow rate setting: ± 2 %</li><li>Communication: RS232,Ethernet (LAN),USB,Remote digital I/O</li><li>Power supply: 100 240V 50/60Hz 200VA</li><li>Dimensions W x H x D: 280 x 135 x 498 mm (11.02 x 5.12 x 18.23 in)</li><li>Weight: 13 kg (28.7 lb)</li><li>Output capillary outer diameter: 1/8”</li><li>Upper pressure limit (MPa): 1– 15 (2176PSI)</li><li>Precision of pressure measurement: ± 2%</li><li>Supported Gradient Box: ECB2005, ECB2005PC</li><li>Pressure Compensation Learning: yes&nbsp;</li></ul></div>

ECOM LED20M FIX Dual UV Detector with display

The LED20M FIX Dual UV Detector with a display uses Light Emitting Diodes (LED) as the light source. It is used for flash chromatography.

<div style="display:block;" aria-labelledby="tab_item-0">The LED20M FIX Dual UV Detector with a display uses Light Emitting Diodes (LED) as the light source. It is used for flash chromatography.<h3>Why choose LED20M FIX detectors for your application</h3><ul><li>The LED detectors allow easy and convenient detection in the UV-VIS range. They are manufactured in single or dual channel models with fixed wavelength setup.</li><li>The detectors are widely used in chromatography techniques using gravity glass columns for purification and isolation of organic small molecules and other compounds of interest. Long-lasting and reliable light source is provided by LED.</li><li>The optical flow cell is easily accessible and replaceable, this feature allows flexible choice of detection sensitivity if required. Low cell heating due to low power dissipation of LEDs makes this detector ideal for applications where analytes may be susceptible to degradation due to elevated temperatures. Absorbance information is displayed in detail on the integrated OLED display in numerical and graphical formats.</li><li>The units have convenient USB-C connectivity and power. When the detector is connected to a PC, the recorded data can be stored and processed using the ECOMAC software. ECOMAC basic software license is available with the price of the product without any additional fees. All these features and capabilities allow LED20M FIX to be an affordable, cost-effective, reliable and robust choice of an UV-VIS detector.</li></ul><h4>Wavelengths</h4><ul><li>The dual UV detector version measures at two fixed wavelengths, which are adjusted in production and given by the built-in LEDs.</li><li>By default, diodes with wavelengths of 255 and 280 nm are used. Optionally, the customer can select a wavelength in the range of 255–⁠⁠⁠⁠⁠⁠600 nm in steps of 5 nm.</li></ul><h4>Control</h4><ul><li>The detector can work without any additional SW support, but it is also possible to interconnect it via USB-C cable to a PC with ECOMAC SW, to get a data set for later use or to get reports for unit diagnostics.</li><li>The unit has an innovative PCB board that powers the LEDs, controls the unit, and has many new features, including higher sampling speed.</li></ul><h4>Key features and benefits</h4><ul><li>OLED display</li><li>Numerical and graphical view mode</li><li>Long lifetime of the LED light source</li><li>Low cell heating due to low power losses of the LEDs</li><li>USB C powering and communication port</li><li>ECOMAC Basic software for free</li><li>Autozero function</li><li>Easy flow cell replacement</li><li>Small dimensions</li><li>ECOMAC SW - &nbsp;sophisticated software for data acquisition and for diagnostics</li></ul></div>

ECOM Separtrix PP03 Preparative Pump

Pulse-less triplex piston pumps designed for preparative chromatography applications, equipped with unique compact three-piston head for smooth flow and easy maintenance.

Separtrix PP03 are pulse-less triplex piston pumps designed for preparative chromatography applications - nevertheless, they can be used everywhere, where high pressure, precise flow without pulsations, and high resistance against corrosion are needed. Pumps are equipped with unique compact three-piston head for smooth flow and easy maintenance without a risk of leakage on connecting parts. Back flushed pistons are covered by a hard and chemically resistant polycrystalic carbon layer. Piston cylinders have low dead volume and samples injected through the pump appear low spreading.Pumps with different flow rate ranges differ only in head type, piston diameters, and tubing diameters. Separtrix PP03 are usually supplied with an asynchronous motor and frequency converter but are also available with a step motor which allows the use of the pump in an extremely broad range of flow rates - both for analytical and preparative applications.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/ECOM_ECOM_Separtrix_PP_03_Preparative_Pump_4_6079b99e0f.jpg" alt="ECOM: Separtrix PP03 Preparative Pump" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_ECOM_ECOM_Separtrix_PP_03_Preparative_Pump_4_6079b99e0f.jpg 245w," sizes="100vw" width="1349" height="503">Special configurations of Separtrix PP03 pumps are used for three phases low pressure gradient – in this case is extremely important that these pumps offer a nearly constant flow rate not only on the output but on the input too. Low-pressure gradient units are delivered with three solenoid valves on the plate which can be connected to the pump side. The power supply for valves is installed inside the pump box. 10 linear steps can be programmed.Separtrix PP03 pumps are delivered in configuration for high-pressure binary gradient as well. Two pumps – master and slave types – are working together. The master pump controls the flow rate and gradient composition (10 linear steps), slave pump is delivered without a control display, keyboard(s), and pressure sensor. All Separtrix PP03 pumps are equipped with keyboard(s) and graphic display. There is a possibility to set flow rate, pressure limit, and flow correction. A second keyboard is included for gradient programming in the case of low-pressure gradient pumps and high-pressure gradient master pumps.Separtrix PP 03 can be used in the mode of remote control. Pumps can cooperate with the <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/999">Clarity data station (Dataapex)</a>. Flow rate, gradient composition, and pressure limit can be programmed. The control module for PP 03 pumps was successfully tested and agreed upon by Dataapex. PP 03 pumps can be controlled using Ecom software ECOMAC as well.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/ECOM_ECOM_Separtrix_PP_03_Preparative_Pump_2_ce1c6f0f8f.jpg" alt="ECOM: Separtrix PP03 Preparative Pump" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_ECOM_ECOM_Separtrix_PP_03_Preparative_Pump_2_ce1c6f0f8f.jpg 245w," sizes="100vw" width="1377" height="832"><h3>Types &amp; Description with technical parameters</h3>SEPARTRIX PP03 A: Piston pulsless pump, three pistons O.D. 10 mm with a diamond layer in one stainless steel head, ceramic ball valves, 620 W AC motor vector frequencyconverter, flow rate 25 ml/min. – 800 ml/min., 260 bar (3500 PSI), pressure measurement and limit, membrane keyboard, graphic displaySEPARTRIX PP03 B: Piston pulsless pump, three pistons O.D. 14 mm with diamond layer in one stainless steel head, ceramic ball valves, 620 W AC motor with vector frequency converter, flow rate 50 ml/min. – 1600 ml/min., 160 bar (2100 PSI), pressure measurement and limit, membrane keyboard, graphic displaySEPARTRIX PP03 A: Piston pulsless pump, three pistons O.D. 10 mm with a diamond layer in one stainless steel head, ceramic ball valves, 620 W AC motor vector frequencyconverter, flow rate 25 ml/min. – 800 ml/min., 260 bar (3500 PSI), pressure measurement and limit, membrane keyboard, graphic displaySEPARTRIX PP03 B: Piston pulsless pump, three pistons O.D. 14 mm with diamond layer in one stainless steel head, ceramic ball valves, 620 W AC motor with vector frequency converter, flow rate 50 ml/min. – 1600 ml/min., 160 bar (2100 PSI), pressure measurement and limit, membrane keyboard, graphic displaySEPARTRIX PP03 C: Piston pulsless pump, three pistons O.D. 20 mm with diamond layer in one stainless steel head, ceramic ball valves, 620 W AC motor with vector frequency converter, flow rate 100 ml/min. – 3200 ml/min., 80 bar (1100 PSI), pressure measurement and limit, membrane keyboard, graphic displaySEPARTRIX PP03 AG: PP03 A pump, flow rate 25 ml/min. – 800 ml/min., max. 260 bar (3500 PSI), three phases low-pressure gradient included, (3 x solenoid valves + connecting armature on own holder + 3 x valve power supply in pump unit), second keyboard for gradient control&nbsp;SEPARTRIX PP03 BG: PP03 B pump, three phases, flow rate 50 ml/min. – 1600 ml/min., max. 150 bar (2100 PSI), low-pressure gradient included (3 x solenoid valves + connecting armature on own holder+3 x valve power supply in pump unit), second keyboard for gradient controlSEPARTRIX PP03 C: Piston pulsless pump, three pistons O.D. 20 mm with diamond layer in one stainless steel head, ceramic ball valves, 620 W AC motor with vector frequency converter, flow rate 100 ml/min. – 3200 ml/min., 80 bar (1100 PSI), pressure measurement and limit, membrane keyboard, graphic displaySEPARTRIX PP03 AG: PP03 A pump, flow rate 25 ml/min. – 800 ml/min., max. 260 bar (3500 PSI), three phases low-pressure gradient included, (3 x solenoid valves + connecting armature on own holder + 3 x valve power supply in pump unit), second keyboard for gradient control&nbsp;SEPARTRIX PP03 BG: PP03 B pump, three phases, flow rate 50 ml/min. – 1600 ml/min., max. 150 bar (2100 PSI), low-pressure gradient included (3 x solenoid valves + connecting armature on own holder+3 x valve power supply in pump unit), second keyboard for gradient controlSEPARTRIX PP03 CG: PP03 C pump, flow rate 100 ml/min. – 3200 ml/min., 80 bar (1000 PSI), three phases low-pressure gradient included, (3 x solenoid valves + connecting armature on own holder+3 x valve power supply in pump unit), second keyboard for gradient controlSEPARTRIX PP03S A: Piston pulsless pump, three pistons O.D 10 mm with diamond layer in one stainless steel head, ceramic ball valves, step motor, flow rate 1 ml/min. – 400 ml/min., 250 bar (3500 PSI), pressure measurement and limitSEPARTRIX PP03S B: Piston pulsless pump, three pistons O.D 14 mm with diamond layer in one stainless steel head, ceramic ball valves, step motor, flow rate 1 ml/min. – 800 ml/min., 150 bar (2100 PSI), pressure measurement and limit, membrane keyboard, graphic displaySEPARTRIX PP03S C: Piston pulsless pump, three pistons O.D 20 mm with diamond layer in one stainless steel head, ceramic ball valves, step motor, flow rate 2 ml/min. – 1600 ml/min., 70 bar (800 PSI), pressure measurement and limit, membrane keyboard, graphic displaySEPARTRIX PP03S AG: PP03S A pump, flow rate 1 ml/min. – 400 ml/min., 250 bar (3500 PSI), three phases low-pressure gradient included, (3 x solenoid valves + connecting armature on own holder+3 x valve power supply in pump unit), second keyboard for gradient controlSEPARTRIX PP03S BG: PP03S B pump, flow rate 1 ml/min. – 800 ml/min., 150 bar (2100 PSI), three phases low-pressure gradient included, (3 x solenoid valves + connecting armature on own holder+3 x valve power supply in pump unit), second keyboard for gradient controlSEPARTRIX PP03S CG: PP03S C pump, flow rate 2 ml/min. – 1600 ml/min., 70 bar (800 PSI), three phases low-pressure gradient included, (3 x solenoid valves + connecting armature on own holder+3 x valve power supply in pump unit), second keyboard for gradient controlSEPARTRIX PP03SM A: PP03S A pump, flow rate 0,5 ml/min. – 400 ml/min., 250 bar (3500 PSI), master pump for binary high-pressure gradient, second keyboard for gradient programming&nbsp;SEPARTRIX PP03SM B: PP03S B pump, flow rate 1 ml/min. – 800 ml/min., 150 bar (2100 PSI), master pump for binary high-pressure gradient, second keyboard for gradient programmingSEPARTRIX PP03SM C: PP03S C pump, flow rate 2 ml/min. – 1600 ml/min., 70 bar (800 PSI), master pump for binary high-pressure gradient, second keyboard for gradient programmingSEPARTRIX PP03SS A: PP03SS A pump, flow rate 0,5 ml/min. – 400 ml/min., 250 bar (3500 PSI), slave pump for binary gradient, no display, no keyboard&nbsp;SEPARTRIX PP03SS B: PP03SS B pump, flow rate 1 ml/min. – 800 ml/min., 150 bar (2100 PSI), slave pump for binary gradient, no display, no keyboardSEPARTRIX PP03SS C: PP03SS C pump, flow rate 2 ml/min. – 1600 ml/min., 70 bar (800 PSI), slave pump for binary gradient, no display, no keyboard

ECOM LED20M FIX Single UV Detector with display

The LED20M FIX Single UV Detector with a display uses Light Emitting Diodes (LED) as the light source. It is used for flash chromatography.

<div style="display:block;" aria-labelledby="tab_item-0">The LED20M FIX Single UV Detector with a display uses Light Emitting Diodes (LED) as the light source. It is used for flash chromatography.<h3>Why choose LED20M FIX detectors for your application</h3><ul><li>The LED detectors allow easy and convenient detection in the UV-VIS range. They are manufactured in single or dual channel models with fixed wavelength setup.</li><li>The detectors are widely used in chromatography techniques using gravity glass columns for purification and isolation of organic small molecules and other compounds of interest. Long-lasting and reliable light source is provided by LED.</li><li>The optical flow cell is easily accessible and replaceable, this feature allows flexible choice of detection sensitivity if required. Low cell heating due to low power dissipation of LEDs makes this detector ideal for applications where analytes may be susceptible to degradation due to elevated temperatures. Absorbance information is displayed in detail on the integrated OLED display in numerical and graphical formats.</li><li>The units have convenient USB-C connectivity and power. When the detector is connected to a PC, the recorded data can be stored and processed using the ECOMAC software. ECOMAC basic software license is available with the price of the product without any additional fees. All these features and capabilities allow LED20M FIX to be an affordable, cost-effective, reliable and robust choice of an UV-VIS detector.</li></ul><h3>Wavelengths</h3><ul><li>The single UV detector version measures at 1 fixed wavelength, which is adjusted in production and given by the built-in LEDs.</li><li>By default, diodes with wavelengths of 255 or 280 nm are used. Optionally, customers can select a wavelength within the range of 255–⁠⁠⁠⁠⁠⁠600 nm in steps of 5 nm.</li></ul><h3>Control</h3><ul><li>The detector can work without any additional SW support, but it is also possible to interconnect it via USB-C cable to a PC with ECOMAC SW, to get a data set for later use or to get reports for unit diagnostics.</li><li>The unit has an innovative PCB board that powers the LEDs, controls the unit, and has many new features, including higher sampling speed.</li></ul><h3>Key features and benefits</h3><ul><li>Practical OLED display</li><li>Numerical and graphical view mode</li><li>Long lifetime of the LED light source</li><li>Low cell heating due to low power losses of the LEDs</li><li>USB -C powering and communication port</li><li>Autozero function</li><li>Easy flow cell replacement</li><li>Small dimensions</li><li>ECOMAC SW - &nbsp;sophisticated software for data acquisition and for diagnostics</li></ul>Note: A preparative cell PFC 200 Basic is supplied with the unit. Other flow cells are available at request.</div>

ECOM LED20G Dual UV Detector

LED20G Dual UV detector for preparative and flash chromatography. ECOM's unique patented technology radically improves the detectors´ features. LEDs are used as the source of light.

<div style="display:block;" aria-labelledby="tab_item-0">LED20G Dual UV LED detector for preparative and flash liquid chromatography. LEDs (Light Emitting Diodes) are used as the light source. A unique and patented ECOM technology radically improves the detector characteristics.&nbsp;The LEDs themselves typically have a peak wavelength with a tolerance of +/- 5 nm and a spectral half-width of 10-20 nm, which is unacceptable for some applications, as e.g. for FPLC. This ECOM solution, however, allows the spectral width to be narrowed and, thanks to our patented technology, the exact wavelength to be selected from the LED spectrum.This version of the dual UV detector measures at two fixed wavelengths given by the installed LEDs.The default wavelengths are 254 and 280 nm. Optionally, the customer can select a wavelength in the range 254-600 nm in 1 nm steps.The unit is controlled by an innovative printed circuit board that powers the LEDs, controls the unit, and has many new features including higher sampling speed.<h3>Key features and benefits</h3><ul><li>Sharp, high, and symmetrical peaks thanks to the ECOM patented technology</li><li>Excellent linearity</li><li>Excellent price-performance ratio</li><li>Compact device dimensions</li><li>Low cell heating due to LED low power supply (0.7 W) allows use for peptide analysis or FPLC</li><li>Easy flow cell replacement</li><li>Higher sampling speed</li><li>Sophisticated diagnostic software</li><li>Diodes with wavelengths of 254 and 280 nm and a PFC cell with an optical path length of 2 mm are used as standard.</li><li>Other cells and wavelengths on request.</li></ul><h3>Parameters</h3><ul><li>Number of channels (Signals): Two fix wavelength</li><li>Typical spectral half-width&nbsp;: 4</li><li>Light source: LEDs</li><li>Noise level at test cell (254 nm, TC 0.75 s): ± 10x10-6 AU</li><li>Drift at test cell (254 nm after 1 h): 1x10-3 AU/hr</li><li>Communication: Remote digital I/O</li><li>Power supply: 12-24 V DC</li><li>Power input: 2 W</li><li>Materials in contact with mobile phase: FEP; fused silica, stainless steel (cell)</li><li>Communication interface: USB-C</li><li>Optical cables: no</li><li>Dimensions W x H x D: 193 x 70 x 40 mm (7.60 x 2.76 x 1.57 in)</li><li>Weight: 0.66 kg (1.46 Ibs)</li></ul></div>

ECOM Separchrom PC01-HPLC Industrial Preparative Columns with Axial Compression

Separchrom PC01 ECOM industrial preparative columns correspond to the highest requirements of preparative liquid chromatography. They are designed to be used in a mode of axial compression with a moving input piston. 

<div style="display:block;" aria-labelledby="tab_item-0">HPLC Columns for prep chromatography. High performance columns with axial compression.Separchrom PC01 ECOM columns correspond to the highest requirements of preparative liquid chromatography. They are designed to be used in a mode of axial compression with a moving input piston. In the original design, they are equipped with identical pistons on input and output (biaxial compression as an option). In the ECOM Separchrom PC FE modification, they have a fixed end plate on the output instead of the piston. Pistons and plates are equipped with frits. A liquid distributing system is installed under each frit. The design guarantees perfect piston flow, high efficiency even for high injection volume, and simple accessibility of frits for cleaning. Columns can be packed by dynamic slurry method or by sedimentation or with sorbent in a dry state.SEPARCHROM PC 01 ECOM columns are made of stainless steel AISI 316L (tube inner surface is polished to reach Ra &lt; 0.3 µm) with stainless steel pistons and UHMWPE (PTFE on the request) sealing rings. The stroke of the main piston is proportional to the used hydraulic cylinder or flange bolt length. Pistons are sectional; the frit (sintered mesh disc 3 µm pore size, 5 mm thickness) with the frit ring can be removed. The output plate in the FE version is made of UHMWPE, frit is fixed with a simple frit ring. Column flanges are not welded, but screwed onto the column tube. No temperature increase during manufacturing means no change in steel properties. The column stand made of stainless steel profiles is included for columns over 100 mm I.D.Hydraulic cylinders fitted on the upper flange are offered with manual oil pumps as well as with fully automated electric motor-driven devices for column packing/unpacking procedures.<h3>Accessories</h3>Columns are offered with a broad scale of accessories such as filling adapters, slurry mixing vessels, slurry transporting pumps, etc.<h3>COLUMN CONFIGURATION EXAMPLES</h3>Columns are custom-made, do not hesitate to ask for any other sizes within the possible ranges<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/ECOM_Separchrom_PC_01_HPLC_Column_available_configuration_part_1_1795482301.jpg" alt="ECOM: Separchrom PC01-HPLC Column - available configuration - part 1" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_ECOM_Separchrom_PC_01_HPLC_Column_available_configuration_part_1_1795482301.jpg 236w," sizes="100vw" width="1440" height="952"><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/ECOM_Separchrom_PC_01_HPLC_Column_available_configuration_part_2_6d3198af67.jpg" alt="ECOM: Separchrom PC01-HPLC Column - available configuration - part 2" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_ECOM_Separchrom_PC_01_HPLC_Column_available_configuration_part_2_6d3198af67.jpg 239w," sizes="100vw" width="1442" height="942"><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/ECOM_Separchrom_PC_01_HPLC_Column_available_configuration_part_3_9fd77a1054.jpg" alt="ECOM: Separchrom PC01-HPLC Column - available configuration - part 3" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_ECOM_Separchrom_PC_01_HPLC_Column_available_configuration_part_3_9fd77a1054.jpg 245w," sizes="100vw" width="1435" height="315"></div>

ECOM Separchrom PC02-MPLC (Medium-pressure) Columns for Prep Chromatography

Industrial-scale Preparative Columns PC02 - Columns for medium-pressure with axial bed compression for prep chromatography.

<div style="display:block;" aria-labelledby="tab_item-0">ECOM Separchrom PC02 medium-pressure stainless steel columns are intended for separation where high pressure is not necessary, but good efficiency can still be expected. They are made of stainless steel tubes.Part of the column is an input piston made of ultra-high molecular weight polyethylene and it is equipped with stainless steel support and stainless steel mesh frit. Flow distributor with groves is incorporated into the piston to guarantee piston flow with nearly zero pressure drop. The design guarantees simple accessibility of frits for cleaning.Columns can be packed by dynamic slurry method, or by sedimentation, or with sorbent in the dry state, both with silica and polymer sorbents. For soft polymer sorbents, ECOM Separchrom PC02 oil systems can be equipped with a special software application to compensate for the swelling and unswelling of sorbents in different mobile phases (the column piston is moved in very small steps up and down during use).<h3>Materials</h3>Medium pressure prep chromatography column ECOM SEPARCHROM PC 02 is made of AISI 316L stainless steel, UHMWE moving pistons are equipped with integral sealing wings. Frits (stainless steel mesh 5 µm pore size, 5 mm thickness) can be fixed with a stainless steel ring. The stand made of stainless steel profiles is included.<h3>COLUMN CONFIGURATION EXAMPLES</h3>Columns are custom-made, do not hesitate to ask for any other sizes within the possible ranges<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/ECOM_Separchrom_PC_02_HPLC_Column_available_configuration_part_1_dfb61faf03.jpg" alt="ECOM: Separchrom PC02-HPLC Column - available configurations - part 1" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_ECOM_Separchrom_PC_02_HPLC_Column_available_configuration_part_1_dfb61faf03.jpg 245w," sizes="100vw" width="1641" height="939"><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/ECOM_Separchrom_PC_02_HPLC_Column_available_configuration_part_2_cb9f807757.jpg" alt="ECOM: Separchrom PC02-HPLC Column - available configurations - part 2" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_ECOM_Separchrom_PC_02_HPLC_Column_available_configuration_part_2_cb9f807757.jpg 245w," sizes="100vw" width="1645" height="364"></div>

ECOM Separchrom PC04-Non-metal Columns for Prep Chromatography

Industrial-scale preparative non-metal columns for prep chromatography with axial compression correspond to the highest requirements of preparative liquid chromatography. 

<div style="display:block;" aria-labelledby="tab_item-0">Polyethylene cartridge columns are usually intended for flash chromatography. We offer powerful ECOM Separchrom PC04 columns made of high-quality ultra-high molecular weight polyethylene, equipped with moving pistons and with no metal in contact with the mobile phase. Non-metal columns are required in biochromatography and some other special applications.Plastic columns for preparative liquid chromatography ECOM SEPARCHROM PC 04, are unfilled, and made of ultra-high molecular weight polyethylene. They are equipped with the same pistons on the input and the output. The input piston is moved either by flange bolts (type A), or by a central stainless steel threaded rod (type B). The pistons are fitted with plastic polypropylene frits 10 µm and a distribution system.<h3>COLUMN CONFIGURATION EXAMPLES</h3>Columns are custom-made, do not hesitate to ask for any other sizes within the possible ranges<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/ECOM_Separchrom_PC_04_HPLC_Column_available_configurations_8767eb40ae.jpg" alt="ECOM: Separchrom PC04-HPLC Column - available configurations" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_ECOM_Separchrom_PC_04_HPLC_Column_available_configurations_8767eb40ae.jpg 245w," sizes="100vw" width="1645" height="823"></div>

Products from ECOM - page 2

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