<p><strong>At MSACL 2025, a Thermo Fisher Scientific–sponsored workshop led by Qin Fu addressed one of the most persistent challenges in proteomics: how to efficiently and reproducibly translate biomarker discoveries into clinically meaningful assays. Drawing on experience spanning academia and industry—including prior work in Jennifer Van Eyk’s lab—Fu shared practical insights into building a scalable, end-to-end biomarker discovery-to-validation pipeline.</strong></p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Thermo_Fisher_Scientific_Accelerating_Biomarker_Discovery_and_Validation_From_Discovery_to_Clinical_Utility_9558364cf2.jpg" alt="Thermo Fisher Scientific: Accelerating Biomarker Discovery and Validation: From Discovery to Clinical Utility" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Thermo_Fisher_Scientific_Accelerating_Biomarker_Discovery_and_Validation_From_Discovery_to_Clinical_Utility_9558364cf2.jpg 245w," sizes="100vw" width="1024" height="512"></p><p>The session highlighted how emerging mass spectrometry technologies, automation, and informatics are reshaping biomarker research—reducing complexity, improving reproducibility, and accelerating the path to clinical utility.</p><h3><strong>The three tiers of biomarker assays</strong></h3><p>The workshop opened with a review of the widely accepted three-tier framework that guides biomarker development from early discovery through clinical validation:</p><h4><strong>Tier 3 – discovery</strong></h4><p>Exploratory, untargeted workflows such as data-dependent acquisition (DDA) and data-independent acquisition (DIA). These approaches prioritize breadth, enabling the identification of large-magnitude biological changes across hundreds to thousands of analytes, typically with low-to-moderate precision and without internal standards.</p><h4><strong>Tier 2 – verification</strong></h4><p>Research-grade targeted assays, including parallel reaction monitoring (PRM) and multiple reaction monitoring (MRM). These methods focus on tens to hundreds of analytes, delivering improved precision and repeatability to confirm trends observed during discovery.</p><h4><strong>Tier 1 – validation</strong></h4><p>Clinically validated assays designed to meet rigorous quality and regulatory standards. These workflows incorporate internal standards and strict quality controls to ensure quantitative reproducibility suitable for clinical and translational use.</p><p>Each tier represents a critical step toward ensuring that biomarker candidates can ultimately deliver reliable patient benefit.</p><h3><strong>The central challenge: from sample to signal</strong></h3><p>Reliable biomarker development depends on consistency across the entire analytical workflow—from biological sample preparation to mass spectrometry data acquisition and downstream analysis. Every step introduces potential sources of variability, and minimizing this analytical noise while preserving biological signal is essential.</p><p>Automation emerged as a central theme of the workshop. Beyond improving throughput, automation fundamentally enhances reproducibility. Robotic sample preparation reduces variability associated with digestion, pipetting, and handling—enabling consistent performance across hundreds or thousands of samples, a scale that is difficult to achieve manually.</p><h3><strong>Technological innovation powering a paradigm shift</strong></h3><p>Recent advances in mass spectrometry are enabling researchers to bridge the gap between discovery and validation more efficiently than ever before. The workshop highlighted several Thermo Fisher Scientific platforms driving this shift:</p><ul><li><strong>Thermo Scientific Orbitrap Astral mass spectrometer</strong><br>Optimized for discovery workflows, the Astral system delivers rapid acquisition and deep proteome coverage while maintaining high precision across large cohorts.</li><li><strong>Thermo Scientific Stellar platform</strong><br>Designed for high-throughput targeted quantification, the Stellar platform supports scalable PRM workflows. Features such as PRM Conductor enable adaptive retention time tracking, which is essential for robust performance in large studies.</li><li><strong>Thermo Scientific OptaSpray Ion Source (under evaluation)</strong><br>A hands-free ionization source designed to deliver consistent spray performance with simplified maintenance, supporting reproducibility across thousands of injections.</li></ul><p>Together, these technologies create a smoother continuum across assay tiers, shortening timelines and reducing barriers to clinical translation.</p><h3><strong>Case study: Inflammatory bowel disease (IBD) cohort</strong></h3><p>A key highlight of the presentation was a large-scale biomarker study in inflammatory bowel disease (IBD). The team conducted a 500-sample discovery analysis, followed by validation in a 1,000-sample cohort. Discovery was performed using the Orbitrap Astral system, while targeted validation employed the Stellar platform.</p><p>This integrated approach successfully confirmed established biomarkers such as C-reactive protein (CRP) while also identifying novel protein candidates with strong translational potential. Importantly, these markers demonstrated consistency across discovery and validation data sets—underscoring the power of advanced instrumentation combined with robust workflows and informatics.</p><h3><strong>From high quantity to high quality</strong></h3><p>Historically, biomarker discovery has involved a tradeoff between throughput and data quality. The workshop demonstrated that this compromise is no longer necessary. By integrating automated sample preparation, optimized informatics, and next-generation mass spectrometry, researchers can now generate high-quality, high-throughput data that is both scalable and reproducible.</p><p>This shift enables faster discovery while increasing confidence that candidate biomarkers are ready for downstream validation and clinical follow-up.</p><h3><strong>The future of biomarker translation</strong></h3><p>The workshop concluded on an optimistic note. Innovations in proteomics are fundamentally transforming biomarker development—shortening timelines, reducing costs, and accelerating the transition from discovery to clinical application.</p><p>By integrating platforms such as Orbitrap Astral, Stellar, and OptaSpray, Thermo Fisher Scientific is helping advance a new era of translational biomarker science—where precision, scalability, and reliability work together to deliver meaningful clinical impact.</p><p><i>Watch the full workshop recording to </i><a target="_blank" rel="noopener noreferrer" href="https://www.youtube.com/watch?v=ziyffQzZTwk"><i>explore the data, workflows, and results behind this end-to-end approach to biomarker discovery and validation.</i></a></p><h3><strong>Intended use disclaimer</strong></h3><p>General Laboratory Equipment – Not For Diagnostic Procedures.<br>Thermo Scientific general laboratory equipment, consumables, and software are intended for research, academic, and industrial use only. These products are not designed, validated, or approved for in vitro diagnostic or clinical use. Use of these products for diagnostic purposes may result in inaccurate results and potential health and safety risks.</p><h3><strong>Resources</strong></h3><p><strong>Workshop &amp; educational content</strong></p><ul><li>MSACL 2025 workshop recording: <a target="_blank" rel="noopener noreferrer" href="https://www.youtube.com/watch?v=ziyffQzZTwk"><i><strong>Accelerating Biomarker Discovery and Validation</strong></i></a></li><li>Other MSACL workshop recordings <i>coming soon</i></li></ul><p><strong>Thermo Fisher Scientific Product Pages</strong></p><ul><li><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/2207"><strong>Thermo Scientific TSQ Certis Mass Spectrometer</strong></a></li><li><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/836"><strong>Thermo Scientific Orbitrap Astral Mass Spectrometer</strong></a></li><li><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/1149"><strong>Thermo Scientific Stellar Mass Spectrometer</strong></a></li><li><a target="_blank" rel="noopener noreferrer" href="https://www.thermofisher.com/order/catalog/product/B51004132">Thermo Scientific OptaSpray Ion Source</a></li><li><a target="_blank" rel="noopener noreferrer" href="https://www.thermofisher.com/content/lifetech/global/en/home/industrial/mass-spectrometry/mass-spectrometer-price-affordability-programs.html">Mass spectrometer affordability programs</a> (Refurbished MS, trade-in, financing/ leasing)</li></ul><p><strong>Peer-Reviewed Literature</strong></p><ul><li>Baker ES et al. <a target="_blank" rel="noopener noreferrer" href="https://europepmc.org/article/MED/22943415"><i>Mass spectrometry for translational proteomics: progress and clinical implications.</i></a> Genome Medicine (2012).</li><li>Fu Q et al. <a target="_blank" rel="noopener noreferrer" href="https://academic.oup.com/clinchem/article/62/1/198/5611803"><i>An Empirical Approach to Signature Peptide Choice for Selected Reaction Monitoring.</i></a> Clinical Chemistry (2016).</li><li>Fu Q et al. <a target="_blank" rel="noopener noreferrer" href="https://doi.org/10.1002/mas.21750"><i>Automated proteomic sample preparation: The key component for high throughput and quantitative mass spectrometry analysis.</i></a> Mass Spectrometry Reviews (2023).</li><li>Fu Q et al. <a target="_blank" rel="noopener noreferrer" href="https://doi.org/10.1021/acs.jproteome.7b00623"><i>Highly Reproducible Automated Proteomics Sample Preparation Workflow for Quantitative Mass Spectrometry.</i></a> Journal of Proteome Research (2018).</li><li>Fu Q et al. <a target="_blank" rel="noopener noreferrer" href="https://doi.org/10.1002/anie.202409446"><i>A Proteomics Pipeline for Generating Clinical Grade Biomarker Candidates from DIA-MS Discovery.</i></a> Angewandte Chemie International Edition (2024).</li><li>Fu Q et al. <a target="_blank" rel="noopener noreferrer" href="https://doi.org/10.1002/anie.202507610"><i>Development and Clinical Evaluation of a Multiplexed Health Surveillance Panel Using Ultra High-Throughput PRM-MS in an Inflammatory Bowel Disease Cohort.</i></a> Angewandte Chemie International Edition (2025).</li></ul><blockquote><p><strong>Visit us on&nbsp;</strong><a target="_blank" rel="noopener noreferrer" href="https://www.linkedin.com/showcase/72003132/admin/dashboard/"><strong><u>LinkedIn:</u></strong></a><strong>&nbsp;</strong>#Omics #BiomarkerDiscovery #MassSpectrometry #ClinicalResearch</p></blockquote>

Accelerating Biomarker Discovery and Validation: From Discovery to Clinical Utility

<p><strong>Interlaboratory comparisons (ILCs) have been used for more than a century and many important concepts are linked to them. This leaflet addresses the basic terminology of ILCs, why some colloquial terms can be misleading or misunderstood, and the importance of harmonisation.&nbsp;</strong></p><p>An ‘ILC’ is the <i>organisation, performance and evaluation of measurements or tests on the same or similar items by two or more laboratories in accordance with predetermined conditions</i> [1]. ILCs have a variety of overall – and detailed – objectives, the three most common [2] being:</p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Eurachem_Let_s_call_a_PT_scheme_a_PT_scheme_3_9993b9fb0f.jpg" alt="Eurachem: Let’s call a PT scheme a PT scheme" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Eurachem_Let_s_call_a_PT_scheme_a_PT_scheme_3_9993b9fb0f.jpg 245w," sizes="100vw" width="1516" height="472"></p><h4><strong>Some comparisons have special names&nbsp;</strong></h4><p>The evaluation of participant (laboratory, organisation or individual) performance is typically referred to as ‘<strong>proficiency testing</strong>’ (PT) or ‘<strong>external quality assessment</strong>’ [1]. When the main objective is evaluating the performance of, for example, a candidate standard method, the ILC is often called a ‘<strong>method performance study</strong>’ or a ‘<strong>collaborative study</strong>’ [2, 3]. The former is quite clear whereas wording such as “<strong>collaborative</strong>” and “<strong>cooperative</strong>” just stresses joint effort. A project aimed at producing a new certified reference material may involve several laboratories conducting analyses on agreed properties [4]. Not surprisingly, this work is sometimes labelled as a ‘<strong>material certification study</strong>’. Special ILCs used to demonstrate measurement capabilities of National Metrology Institutes are called ‘<strong>key comparisons</strong>’, ‘<strong>supplementary comparisons</strong>’, and ‘<strong>pilot studies</strong>’ [5].&nbsp;</p><h4><strong>Some terms can be confusing&nbsp;</strong></h4><p>Other terms for ILCs, including ‘ring test’, ‘round robin’ and ‘circle analysis’, are common in the literature. They have, however, been used for different objectives and different designs and may be ambiguous or understood differently by laboratory staff. The use of these terms may, for example, imply a specific way of distributing the ILC sample. ISO/IEC 17043 uses ‘sequential scheme’, for a PT where a unique item is transferred between the participants and ‘simultaneous scheme’, in which similar items from a batch are distributed simultaneously to the participants [1].&nbsp;</p><p>Terms like ‘<strong>measurement audit</strong>’, ‘<strong>interlaboratory testing scheme</strong>’, ‘<strong>measurement comparison scheme</strong>’, ‘<strong>rapid performance evaluation scheme</strong>’ and ‘<strong>intercalibration</strong>’ may not correctly reflect the category of laboratory involved, or the type of work participants do during the ILC.&nbsp;</p><p>When in 1994 the IUPAC defined and described three major types of ‘interlaboratory studies’, the word ‘study’ was preferred to synonyms such as ‘trial’, ‘exercise’, ‘test’, ‘evaluation’ or ‘check’ [2].</p><h4><strong>Let’s try to harmonise&nbsp;</strong></h4><p>Many laboratory staff are unaware of official terms related to ILCs but recognise the acronym PT and words like ‘ring test’. Ideally, we would use a common scientific language, but harmonisation is time consuming. Terms appear and disappear and definitions change. The same term can be defined differently, even in different international standards. Lack of standards and guidelines in local languages can cause confusion and contribute to spreading of less appropriate terms.&nbsp;</p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Eurachem_Let_s_call_a_PT_scheme_a_PT_scheme_2_820043ce8b.jpg" alt="Eurachem: Let’s call a PT scheme a PT scheme" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Eurachem_Let_s_call_a_PT_scheme_a_PT_scheme_2_820043ce8b.jpg 234w," sizes="100vw" width="1006" height="671"></p><p>Much confusion can be avoided by clear reference to relevant standards and sectoral guides. ISO/ IEC 17043 [1] and ISO 13528 [6] contain many important concepts related to PT schemes and other ILCs. Some of these are also incorporated into ISO/IEC 17025 [7]. Additional useful, and free, tools are the Eurachem PT Guide [8] and the ISO online browsing platform [9].&nbsp;</p><p>In writing guidance and instructions, remember that the term ‘interlaboratory comparison’ has a broad meaning and can be used for all cases described above. Sometimes this is clear enough for the reader. In other cases, use acknowledged terms that reflect the detailed objective of the ILC. Let’s call a PT scheme a PT scheme!</p>

Let’s call a PT scheme a PT scheme!

<p><span><strong>The countdown is on for one of the world’s leading conferences dedicated to food analysis. The 12th International Symposium on Recent Advances in Food Analysis (RAFA 2026), taking place in Prague from 3–6 November 2026, is approaching two important milestones: the Early Bird registration deadline and the deadline for oral abstract submissions, both ending on 30 June 2026. Researchers, analysts, industry professionals, regulators, and students are encouraged to secure their participation at a reduced registration rate and take advantage of the opportunity to present their latest scientific results to the international food analysis community.</strong></span></p><p><span>RAFA 2026 will once again bring together leading experts from academia, industry, and regulatory organizations to discuss the latest developments in food safety, authenticity, contaminants, non-target screening, PFAS, microplastics, food contact materials, artificial intelligence, and advanced analytical technologies. The preliminary program already features an outstanding lineup of internationally recognized speakers addressing some of the most pressing challenges in modern food analysis and food safety.</span></p><h3><strong>Registration</strong></h3><blockquote><p class="cke-user_style-important"><strong>👉</strong><a target="_blank" rel="noopener noreferrer" href="https://rafa.easyevent.eu/tickets/"><strong>Register to attend RAFA 2026!</strong></a></p><p><strong>Early-bird registration until 30 June, 2026</strong></p></blockquote><p>After successful submission of your registration, you will receive by e-mail (i) an automatic confirmation of receipt indicating the total amount of payment due (either for bank transfer or for on-line payment by card), (ii) login to Member section where you can administrate your profile, submit your abstracts, and from <strong>September 2026</strong> register for satellite events, workshops and seminars. If it will not be delivered within a few minutes after submission of your registration please contact us at <strong>RAFA2026@vscht.cz</strong>.</p><p>As soon as payment of registration fee is processed, you will also receive by e-mail (iii) confirmation of payment.</p><h4><strong>Registration Fees</strong></h4><ul><li><strong>Smart rate (Until 30 June, 2026): </strong>€ 655</li><li><strong>Regular registration (Until 30 September, 2026):</strong> € 855</li><li><strong>Late registration (From 1 October, 2026):</strong> € 955</li><li><strong>Student rate*&nbsp;</strong><ul><li><strong>Until 30 June, 2026: </strong>€ 465</li><li><strong>From 1 July, 2026:</strong> € 605</li></ul></li></ul><p><i>* The proof of student status (e.g. copy of a student identify card) is requested as an attachment of the registration form.</i></p><h5><strong>The regular registration fee will include:</strong></h5><ul><li>Attendance at all scientific sessions, workshops, seminars, vendor seminars and other satellite events</li><li>Access to the poster and exhibition area</li><li>Conference kit (name badge, conference bag, conference documents, certificate of participation, certificate of presentation on request)</li><li>Final programme</li><li>E-Book of Abstracts</li><li>Coffee breaks</li><li>Buffet luncheons</li><li>Welcome drink</li></ul><p>In the registration form you can r<strong>egister free of charge for the welcome drink</strong> and you can also order <strong>ticket(s) for the conference dinner (€ 85).</strong></p><p><i>Please note that your registration is firm when your payment has been received.</i></p><h3><strong>Abstract submission</strong></h3><blockquote><p class="cke-user_style-important"><strong>👉</strong><a target="_blank" rel="noopener noreferrer" href="https://rafa.easyevent.eu/tickets/"><strong>Submit your ABSTRACT HERE!</strong></a></p><p>In order to submit an abstract, you must <strong>first register to attend RAFA 2026</strong>. <strong>After registration</strong> you will receive an <strong>access to the Member section </strong>where you can <strong>submit your abstract(s).</strong></p></blockquote><p>&nbsp;After successful submission of your abstract you will receive an automatic confirmation of receipt of submitted abstract via e-mail. If it will not be delivered within a few minutes after submission of your abstract please check at first your spam box-mail and then contact us at <strong>RAFA2026@vscht.cz</strong>.</p><p>Please ensure that your abstract does not contain spelling, grammatical or scientific errors. Even though modifications of your submitted abstract will be allowed in the Abstract section of the Member section until the deadline for the abstract submission, please be confident on the lack of errors in your final version prior to starting the submission process.</p><p>The abstract will be reproduced exactly as submitted. No proofreading will be done, although some corrections may be requested by the reviewers.</p><p>If you need to withdraw your abstract, a written statement reflecting the reasons for this decision must be sent to <strong>RAFA2026@vscht.cz</strong> no later than <strong>September 30, 2026</strong>.</p><h4><strong>Important notice:</strong></h4><blockquote><p><strong>1 registered participant can submit no more than 2 abstracts.</strong></p></blockquote><p>To apply for a young scientist’s oral presentation, as an indication please respect the rule that you should be born in 1991 or later.</p><p>The <strong>text of the abstract </strong>should be<strong> limited to 3000 characters including spaces</strong>. Tables and pictures are not allowed.</p><p><strong>Abstracts of oral presentations and posters</strong> will be included into the "<strong>e-Book of Abstracts</strong>" only after receipt of the conference registration fee. Any payment of the registration fee has to be received until <strong>September 30, 2026</strong>, otherwise contribution(s) will not be included into the e-Book of Abstracts and the Conference programme.</p><h3><strong>Program</strong></h3><h4><strong>Invited Speakers</strong></h4><h5><strong>Food allergen risk assessment: Past, present, future</strong></h5><ul><li>Ben Remington from Remington Consulting Group B.V., Utrecht, the Netherlands &amp; University of Nebraska, USA</li></ul><p>Food allergy and allergen management are global public health issues, and consumer protection depends on transparent and trustworthy labelling. While 30 years of scientific advances show that low level exposures, or reference doses, are unlikely to trigger reactions in most allergic individuals, harmonized and globally aligned regulations are still needed to promote consistent allergen risk assessment and labelling decisions. This presentation will discuss the landscape of allergen risk assessment, global policy developments, current research and future needs in the area.</p><h5><strong>Unmasking hidden adulteration in honey: Strategies for detecting and characterizing honeys produced from sugar-fed colonies</strong></h5><ul><li>Oscar Nuñez Burcio from University of Barcelona, Barcelona, Spain</li></ul><p>From hive to jar, not all honey tells the same story. This presentation addresses hidden adulteration associated with sugar-fed bee colonies, highlighting implications for authenticity, production practices, and the need for a more precise characterization of honey to ensure consumer trust.</p><h5><strong>Analytical and toxicological methods for safety of food contact materials</strong></h5><ul><li>Erich Leitner from Graz University of Technology, Institute of Analytical Chemistry and Food Chemistry, Graz, Austria</li></ul><p>Food packaging plays a critical role in protecting and preserving food throughout the supply chain. All packaging materials intended to come into contact with food must comply with strict EU safety rules. Due to increased complexity of packaging solutions, lowering legal limits and increasing numbers of target compounds, we also have to adapt the strategies used to verify and guarantee the safety of these materials.</p><h5><strong>Data-driven strategies to reduce complexity in non-target HRMS analysis of food samples</strong></h5><ul><li>Anneli Kruve from Stockholm University, Stockholm, Sweden</li></ul><p>LC/HRMS based non-target screening can detect hundreds to thousands of chemical features in complex food and environmental samples. Investigating all of these in detail is practically impossible, so which ones to focus on? Novel computational tools developed in computational mass spectrometry allow predicting the toxicity and concentration of the detected chemical features even if these have not yet been fully structurally elucidated. Combining these predictions enables us to focus on the chemical features possessing high risk.</p><h5><strong>Role of AI in the identification of emerging food systems risks</strong></h5><ul><li>Ákos Bernard Jóźwiak from Syreon Research Institute, Budapest, Hungary</li></ul><p>AI-assisted evidence synthesis – spanning curated scientific evidence, exposome data, and network analysis – is the backbone of next-generation emerging chemical food safety risk identification, enabling earlier signals and more resilient surveillance systems.</p><h5><strong>Challenges of microplastics analysis in the context of food safety</strong></h5><ul><li>Dorte Herzke from Norwegian Institute of Public Health, Oslo, Norway</li></ul><p>Food and food packaging are major sources of micro- and nanoplastic exposure. Plastics used in processing, storage, and packaging can release particles through heat, abrasion, and degradation. Small particles below 2 µm may cross gut barriers and carry chemicals, highlighting the need for robust and sensitive measurement methods.</p><h5><strong>Never-ending analytical challenges in PFAS analysis of food</strong></h5><ul><li>Darina Dvořáková from University of Chemistry and Technology Prague, Prague, Czechia</li></ul><p>Exploring and monitoring PFAS in food requires advanced strategies. Combining targeted, suspect, and non-target HRMS analysis, determination of total fluorine and sum parameters, and novel sensors provides new insights into PFAS occurrence and supports food safety monitoring.</p><h5><strong>An overview of the latest scientific knowledge on process contaminants in food for appropriate risk management measures</strong></h5><ul><li>Thierry Delatour from Nestlé Research, Lausanne, Switzerland.</li></ul><p>Recent scientific findings related to acrylamide and furans formation, occurrence and analytical methods in food provide important insights for risk management.</p>

Deadline for RAFA 2026 Early Registration and Oral Abstract Submission is approaching

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RAFA provides an overview of contemporary trends in ANALYTICAL & BIOANALYTICAL STRATEGIES IN FOOD QUALITY AND SAFETY CONTROL and discusses CHALLENGES / NOVEL APPROACHES IN FOOD AND NATURAL PRODUCTS ANALYSIS.

Recent Advances in Food Analysis (RAFA)

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Eurachem is a European network promoting international traceability of chemical measurements and good analytical practice. It provides expert guidance, supports method validation, uncertainty evaluation, proficiency testing, and facilitates discussion on technical and policy issues in analytical quality.

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Waters ACQUITY APC Columns

Waters ACQUITY Advanced Polymer Chromatography (APC) Columns with novel capabilities for chromatographic efficiency, speed and resolution that cannot be matched by conventional GPC methods.

<h4><strong>ACQUITY APC AQ BEH Column</strong></h4><p>ACQUITY APC AQ columns are designed to provide highly efficient size-based separations for water soluble polymer characterization. The sorbent uses patented Ethylene Bridge Hybrid (BEH) technology to provide a mechanical strong packed bed that resists shinking and swelling for easy mobile phase solvent switching. The expected molecular weight range for this column is approximatley 1, 000 - 30, 000 g/mole.</p><h4><strong>Specifications</strong></h4><ul><li><strong>Separation Mode:</strong> SEC/GPC</li><li><strong>Particle Substrate: </strong>Hybrid</li><li><strong>pH Range Min:</strong> 1 pH</li><li><strong>pH Range Max: </strong>8 pH</li><li><strong>Endcapped: </strong>No</li><li><strong>Silanol Activity: </strong>Medium</li><li><strong>Molecular Weight Range Min:</strong> 1000</li><li><strong>Molecular Weight Range Max:</strong> 30000</li><li><strong>Particle Shape: </strong>Spherical</li><li><strong>Particle Size:</strong> 1,7 µm &nbsp;/ 2.5 µm&nbsp;</li><li><strong>Endfitting Type: </strong>Parker-style</li><li><strong>System:</strong> APC</li><li><strong>Particle Technology:</strong> BEH</li><li><strong>Technique: </strong>SEC</li></ul><h4><strong>ACQUITY APC XT BEH Column</strong></h4><p>ACQUITY APC XT columns are optimized to provide highly efficient size-based separations for organic solvent soluble polymer characterization. The sorbent uses patented Ethylene Bridge Hybrid (BEH) technology to provide a mechanical strong packed bed that resists shinking and swelling for easy mobile phase solvent switching.The expected molecular weight range for this column is approximatley 1,000 - 30,000 g/mole.</p><h4><strong>Specifications</strong></h4><ul><li><strong>Separation Mode:</strong> SEC/GPC</li><li><strong>Particle Substrate: </strong>Hybrid</li><li><strong>pH Range Min:</strong> 1 pH</li><li><strong>pH Range Max: </strong>12 pH</li><li><strong>Endcapped: </strong>No</li><li><strong>Silanol Activity: </strong>Low</li><li><strong>Molecular Weight Range Min:</strong> 1000</li><li><strong>Molecular Weight Range Max:</strong> 30000</li><li><strong>Particle Shape: </strong>Spherical</li><li><strong>Particle Size:</strong> 1,7 µm &nbsp;/ 2.5 µm&nbsp;</li><li><strong>Endfitting Type: </strong>Parker-style</li><li><strong>System:</strong> APC</li><li><strong>Particle Technology:</strong> BEH</li><li><strong>Technique: </strong>GPC</li></ul><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Waters_ACQUITY_APC_AQ_BEH_Column_0c0d837b73.jpeg" alt="Waters: ACQUITY APC Column" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Waters_ACQUITY_APC_AQ_BEH_Column_0c0d837b73.jpeg 234w," sizes="100vw" width="660" height="440"></p><h3><strong>ACQUITY APC Columns</strong></h3><h4><strong>Achieve superior speed and resolution for polymer characterization</strong></h4><p>Achieving superior performance and reliability with high resolution polymer characterization can be a challenge. <strong>ACQUITY Advanced Polymer Chromatography (APC) Columns</strong> are designed for polymer scientists like you, with novel capabilities for chromatographic efficiency, speed and resolution that cannot be matched by conventional GPC methods. With these columns, you can quantify and characterize polymer samples with confidence and accuracy while maximizing productivity.</p><p>The <strong>Ethylene Bridged Hybrid (BEH) particles</strong> used in ACQUITY APC Columns enable rapid solvent switching and the ability to use multiple conditions for the same bank of columns. Conventional polymeric stationary phases are dedicated to a single set of analytical conditions and solvent because the chromatographic bed is vulnerable to shrinking and swelling. By eliminating this undesirable behavior, ACQUITY APC Columns allow for maximum robustness and method development flexibility.</p><h4><strong>Overview</strong></h4><ul><li>Eliminate the shrinking and swelling that often occurs with polymeric stationary phases upon solvent switching with a stable chromatographic column bed&nbsp;</li><li>Achieve unmatched separation speed, resolution, and chromatographic efficiency from optimized pore volumes and particle size</li><li>Meet workflow requirements with 1.7 and 2.5 μm columns for organic and aqueous size-based separation</li><li>Achieve industry-leading column-to-column reproducibility with exceptionally reliable columns from a tightly controlled column manufacturing process</li><li><strong>Recommended Use: </strong>For rapid and accurate chromatographic characterization of synthetic polymer and macromolecular species.&nbsp;</li></ul><h4><strong>ACQUITY APC Column Featured Technologies</strong></h4><h5><strong>BEH Technology</strong></h5><ul><li>Rugged hybrid organic/inorganic base particle</li><li>Improved peak shape for bases- low silanol activity</li><li>Wider operating pH range for method development flexibility</li><li>Mechanical strength for maximum column efficiency at UHPLC operating pressures</li></ul><h4><strong>ACQUITY APC Column Characteristics</strong></h4><h5><strong>ACQUITY APC XT Columns</strong></h5><ul><li>Designed to provide high efficiency sized-based separations for organic soluble polymer characterization</li><li>Uses BEH particle technology</li><li>Stable column bed that resists shrinking and swelling for easy mobile-phase solvent switching</li><li>Features an extended temperature range up to 90 °C</li><li>Designed for organic solvent-based separations</li></ul><h5><strong>ACQUITY APC AQ Columns</strong></h5><ul><li>Designed to provide high efficiency sized-based separations for water soluble polymer characterization</li><li>Uses BEH particle technology</li><li>Robust separations up to 45 °C</li><li>Designed for aqueous-soluble polymer separations</li></ul><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Waters_ACQUITY_APC_Columns_2268ceb5f5.jpeg" alt="Waters: ACQUITY APC Columns" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Waters_ACQUITY_APC_Columns_2268ceb5f5.jpeg 234w," sizes="100vw" width="1024" height="682"></p><h4><strong>Unprecedented capacity for rapid solvent switching</strong></h4><p>Use multiple conditions for the same column bank with rapid solvent switching using the rigid hybrid particles in ACQUITY APC Chromatography Columns. Conventional polymeric phases are often dedicated to single analysis conditions because the chromatographic bed is vulnerable to shrinking and swelling that can be potentially harmful to the column. By eliminating this constraint, ACQUITY APC Chromatography Columns provide more freedom for method development and deliver advanced polymer characterization for a diverse range of samples.</p><h4><strong>Reduce calibration time by a factor of 3-5x and increase resolution</strong></h4><p>With long conventional Gel Permeation Chromatography (GPC) run times of up to one hour or more, analyses of standards and samples can be quite time-consuming. In addition to long GPC run times, the large extra-column volume of conventional GPC systems can result in peak bandspreading, reducing the resolution and thus accuracy of the calibration points. Combined with the lower dispersion ACQUITY APC System, small particle ACQUITY APC Columns deliver less bandspreading and narrower, sharper peaks compared to the conventional GPC system. Additionally, robust sub-3-µm APC Column Technology supports higher flow rate and backpressures, thereby improving resolution.</p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Waters_A_comparison_of_run_times_and_resolution_for_polystyrene_standards_Mp_100_K_10_K_and_1_K_on_a_conventional_GPC_system_and_the_ACQUITY_APC_System_37cfb15ed5.jpeg" alt="Waters: A comparison of run times and resolution for polystyrene standards (Mp: 100K, 10K, and 1K) on a conventional GPC system and the ACQUITY APC System. " srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Waters_A_comparison_of_run_times_and_resolution_for_polystyrene_standards_Mp_100_K_10_K_and_1_K_on_a_conventional_GPC_system_and_the_ACQUITY_APC_System_37cfb15ed5.jpeg 234w," sizes="100vw" width="1024" height="682"></p><h4><strong>Ensure reproducible column performance</strong></h4><p>Reproducible column performance is one of the most critical factors for achieving long-term method reliability during polymer characterization. Each step of our column manufacturing process is monitored and tightly controlled to maintain unmatched product reproducibility. Every test, from raw material characterization to final batch analysis, is designed to ensure that ACQUITY APC Columns perform the same from column-to-column, batch-to-batch, and year-to-year.</p>

Waters SEC Columns

Get unmatched batch-to-batch reproducibility with the wide range of Waters Size-Exclusion Chromatography (SEC) Columns and standards for protein and peptide characterization.

<h4><strong>Size-based separations of peptides, proteins, nucleic acids, LNPs, and viral vectors</strong></h4><p>Get unmatched batch-to-batch reproducibility with the wide range of <strong>Waters Size-Exclusion Chromatography (SEC) Columns</strong> and standards for protein and peptide characterization.</p><p><strong>SEC</strong> is a powerful technique for aggregate and fragment analysis in the <strong>research, development</strong>, and <strong>manufacturing of biotherapeutic proteins</strong>, such as <strong>insulin</strong> and <strong>monoclonal antibodies</strong> (mAb). With SEC, also known as gel filtration, you can separate proteins based on their size (hydrodynamic radii versus absolute molecular weight) in solution, with larger sized species eluting before smaller proteins.</p><p>The <strong>pore size and volume</strong> of the SEC particles used in the packed column drives this <strong>isocratic based technique</strong>, so the column you choose matters. As the molecular weight of the proteins of interest increases, SEC columns with comparatively larger pore size particles are selected.</p><h4><strong>Overview</strong></h4><ul><li>Gain efficiency with this “platform based” method for <strong>proteins ranging from 10,000 to 650,000 Daltons</strong>, leveraging <strong>MaxPeak Premier Technology</strong> coupled with <strong>BEH-PEO Particle Technology&nbsp;</strong> &nbsp;&nbsp;</li><li><strong>Minimize non-desired secondary interactions </strong>for improved separation reproducibility and results with Ethylene Bridged Hybrid (BEH) SEC particles</li><li>Ensure reliable <strong>column-to-column and batch-to-batch performance</strong> with columns quality control tested with relevant peptide, protein, and mAb samples &nbsp;</li><li>Achieve reliable <strong>high throughput analysis on UPLC</strong> systems with our <strong>1.7 µm particle size</strong> offering and reproducible separations on any <strong>HPLC, UHPLC, or UPLC system</strong> to address different application needs with <strong>2.5 µm&nbsp;</strong></li><li><strong>Extend analytical column life</strong> and<strong> lower cost per analyses </strong>with SEC Guards&nbsp;</li><li>Confirm on-site SEC column and LC system performance with available BEH125, BEH200, BEH450, and mAb Size Variant Standards &nbsp;&nbsp;</li><li><strong>Manufactured in a cGMP, ISO 9001</strong> certified plant using stringent manufacturing protocols and ultra-pure reagents</li></ul><p><strong>Recommended Use: </strong>For size-based peptide, protein, and viral vector analyses.</p><h4><strong>System Dispersion Specifications for Column Recommendations</strong></h4><h5><strong>LC System Dispersions &lt;20 µL (UPLC)</strong></h5><ul><li>ACQUITY Premier Protein SEC 250 Å Guards and Columns</li><li>ACQUITY UPLC Protein BEH SEC 125 Å, 200 Å, and 450 Å Guards and Columns</li><li>1.7 µm guards and columns for low dispersion UPLC systems</li></ul><h5><strong>LC System Dispersions &gt;20 µL – ≤35 µL (UHPLC)</strong></h5><ul><li>XBridge Premier Protein SEC 250 Å Guards and Columns</li><li>XBridge Protein BEH SEC 125 Å, 200 Å, and 450 Å Guards and Columns</li><li>BioResolve mAb SEC Guards and Columns</li><li>2.5 µm guards and columns for UHPLC systems</li></ul><h5><strong>LC System Dispersions &gt;35 µL (HPLC)</strong></h5><ul><li>XBridge Protein BEH SEC 125 Å, 200 Å, and 450 Å Guards and Columns</li><li>XBridge Premier Protein SEC 250 Å Guards and Columns</li><li>BioResolve mAb SEC Guards and Columns</li><li>BioSuite SEC Guards and Columns</li><li>3.5 µm guards and columns for HPLC systems</li></ul><h4><strong>GTxResolve SEC Columns</strong></h4><h5><strong>GTxResolve Premier BEH SEC 450 Å Columns</strong></h5><ul><li>2.5 µm particle size columns for UHPLC and UPLC separations</li><li>Lower secondary interactions and lower noise suitable for platform methods</li><li>Low adsorption hardware necessary for analysis of biologics samples</li><li>450 Å pore size with up to 50% higher resolving power reducing need for sample consumption, resulting in faster analyses<ul><li><a target="_blank" rel="noopener noreferrer" href="https://www.waters.com/nextgen/us/en/products/columns/GTxResolve-sec-columns.html"><strong>Explore GTxResolve SEC Columns</strong></a></li></ul></li></ul><h5><strong>GTxResolve Premier SEC 1000 Å Columns</strong></h5><ul><li>3 µm columns for UHPLC and UPLC separations</li><li>1000 Å columns with high efficiency for aggregate analysis of GTx drugs with diameter of 80-200 nm</li><li>Low secondary interaction &amp; improved compatibility with universally applied detector, such as MALS</li><li>Low adsorption hardware necessary for analysis of biologics samples<ul><li><a target="_blank" rel="noopener noreferrer" href="https://www.waters.com/nextgen/us/en/products/columns/GTxResolve-sec-columns.html"><strong>Explore GTxResolve SEC Columns</strong></a></li></ul></li></ul><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Waters_G_Tx_Resolve_SEC_Columns_1b8741a62b.jpg" alt="Waters: GTxResolve SEC Columns" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Waters_G_Tx_Resolve_SEC_Columns_1b8741a62b.jpg 234w," sizes="100vw" width="1024" height="682"></p><h4><strong>Protein SEC Columns</strong></h4><h5><strong>ACQUITY Premier Protein SEC 250 Å Guards and Columns</strong></h5><ul><li>Sub-2-μm particle columns for UPLC separations</li><li>250 Å pore size</li><li>High throughput &amp; resolution SEC separations of biomolecules ranging from 10,000 to 650,000 Daltons on low dispersion UPLC Systems</li><li>Available SEC Guard Columns to extend analytical SEC Column life</li><li>Significantly reduce non-desired ionic and hydrophobic secondary interaction for desired SEC platform methods with MaxPeak Premier Technology and BEH-PEO SEC particle technology<ul><li><a target="_blank" rel="noopener noreferrer" href="https://www.waters.com/nextgen/us/en/products/columns/acquity-premier-columns.html"><strong>Explore ACQUITY Premier Protein BEH SEC Guards and Columns</strong></a></li></ul></li></ul><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Waters_ACQUITY_Premier_Columns_featuring_Max_Peak_HPS_Technology_11a541350e.jpg" alt="Waters: ACQUITY Premier Columns featuring MaxPeak HPS Technology" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Waters_ACQUITY_Premier_Columns_featuring_Max_Peak_HPS_Technology_11a541350e.jpg 234w," sizes="100vw" width="1024" height="682"></p><h5><strong>XBridge Premier Protein SEC 250 Å Guards and Columns</strong></h5><ul><li>2.5 μm particle columns for HPLC and UHPLC separations</li><li>250 Å pore size</li><li>High resolution SEC separations of biomolecules ranging from 10,000 to 650,000 Daltons on any LC system</li><li>Available SEC Guard Columns to extend analytical SEC Column life</li><li>Significantly reduce non-desired ionic and hydrophobic secondary interaction for desired SEC platform methods with MaxPeak Premier Technology and BEH-PEO SEC particle technology</li><li>Specifically designed and QC tested with NIST-based, mAb Size Variant Standard to help ensure batch-to-batch consistency<ul><li><a target="_blank" rel="noopener noreferrer" href="https://www.waters.com/waters/global/Waters-XBridge-Premier-Columns/nav.htm"><strong>Explore XBridge Premier Protein BEH SEC Columns</strong></a></li></ul></li></ul><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Waters_X_Bridge_Premier_Columns_0230c90278.jpg" alt="Waters: XBridge Premier Columns" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Waters_X_Bridge_Premier_Columns_0230c90278.jpg 193w," sizes="100vw" width="950" height="768"></p><h5><strong>BioResolve mAb SEC Guards and Columns</strong></h5><ul><li>2.5 μm particle columns for UPLC, UHPLC, and HPLC separations</li><li>200 Å pore size</li><li>Obtain reproducible, accurate quantitation of monoclonal antibodies (mAbs), associated high molecular weight aggregates (&gt;300,000 Da), and lower molecular weight fragments (e.g., &lt;100,000 Da)</li><li>Each packed column is tested with NIST-based, mAb size variant standard to help ensure batch-to-batch and column-to-column performance consistency<ul><li><a target="_blank" rel="noopener noreferrer" href="https://www.waters.com/waters/global/BioResolve-SEC-mAb-Consumables-%7C-SEC-Guards/nav.htm"><strong>Explore BioResolve mAb SEC Guards and Columns</strong></a></li></ul></li></ul><h5><strong>ACQUITY UPLC Protein BEH SEC Guards and Columns</strong></h5><ul><li>Sub-2-μm particle columns for UPLC separations (2.5 μm for 450 Å)</li><li>Pore size options include: 125 Å, 200 Å, and 450 Å</li><li>Available SEC Guard Columns to extend analytical SEC Column life</li><li>Specifically designed and QC tested with BEH125, BEH200, or BEH450 protein standards to help ensure batch-to-batch consistency</li><li>10x faster than traditional HPLC-based SEC<ul><li><a target="_blank" rel="noopener noreferrer" href="https://www.waters.com/nextgen/us/en/products/columns/acquity-uplc-columns.html"><strong>Explore ACQUITY UPLC Protein BEH SEC Guards and Columns</strong></a></li></ul></li></ul><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Waters_Acquity_UPLC_kolony_1dc5c25d3e/Waters-Acquity-UPLC-kolony.jpg" alt="Waters: Acquity UPLC columns" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Waters_Acquity_UPLC_kolony_1dc5c25d3e/thumbnail_Waters-Acquity-UPLC-kolony.jpg 245w," sizes="100vw" width="807" height="407"></p><h5><strong>XBridge Protein BEH SEC Columns</strong></h5><ul><li>2.5 μm particle columns for use on any UPLC, UHPLC, or HPLC system</li><li>Pore size options include: 125 Å, 200 Å, and 450 Å</li><li>Available SEC Guard Columns to extend analytical SEC Column life</li><li>Specifically designed and QC tested with BEH125, BEH200, or BEH450 protein standards to help ensure batch-to-batch consistency<ul><li><a target="_blank" rel="noopener noreferrer" href="https://www.waters.com/waters/global/XBridge-BEH-Columns-for-High-pH-Chromatography/nav.htm"><strong>Explore XBridge Protein BEH SEC Columns</strong></a></li></ul></li></ul><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Waters_X_Bridge_Columns_b0b55de501/Waters-XBridge-Columns.jpg" alt="Waters: XBridge Columns" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Waters_X_Bridge_Columns_b0b55de501/thumbnail_Waters-XBridge-Columns.jpg 203w," sizes="100vw" width="900" height="691"></p><h4><strong>Peptide SEC Columns</strong></h4><h5><strong>BioSuite SEC Columns</strong></h5><ul><li>Silica-based diol SEC columns</li><li>Molecular weight exclusion limits are determined primarily by the selected pore size</li><li>Available in analytical and semi-preparative column sizes<ul><li><a target="_blank" rel="noopener noreferrer" href="https://www.waters.com/waters/global/BioSuite-Columns/nav.htm"><strong>Explore BioSuite SEC Columns</strong></a></li></ul></li></ul><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Waters_Bio_Suite_Columns_bf2bb8249f.jpg" alt="Waters: BioSuite Columns" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Waters_Bio_Suite_Columns_bf2bb8249f.jpg 184w," sizes="100vw" width="307" height="260"></p><h5><strong>Protein-Pak SEC Columns</strong></h5><ul><li>Based on a 10 μm diol-bonded silica</li><li>Resolve proteins that differ in molecular weight by a factor of two</li><li>Distinguish proteins differing by as little as 15% in molecular weight<ul><li><a target="_blank" rel="noopener noreferrer" href="https://www.waters.com/waters/global/Protein-Pak-HPLC-and-UPLC-Columns/nav.htm"><strong>Explore Protein-Pak SEC Columns</strong></a></li></ul></li></ul><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Waters_Protein_Pak_Columns_be6a669326.jpg" alt="Waters: Protein-Pak Columns" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Waters_Protein_Pak_Columns_be6a669326.jpg 245w," sizes="100vw" width="500" height="315"></p><h4><strong>Choose the right SEC Column for your lab</strong></h4><p>SEC is ideal for aggregate and fragment analysis in the research, development, and manufacturing of biotherapeutic peptides, proteins, and viral vectors, but choosing the right column for your analysis is important. Use the following criteria to choose a column that provides reliable, high quality SEC analyses of various biomolecules, including insulin, monoclonal antibodies, and adeno associated viruses (AAVs).</p><h5><strong>What to consider when choosing an SEC Column:</strong></h5><ul><li>What is the molecular weight of your sample?</li><li>What is the dispersion of your LC system?</li><li>Are you separating components &lt;2 fold difference in molecular weight (MW)?</li><li>Are you separating components &gt;2 fold difference in MW?</li></ul><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Waters_Choose_the_right_Size_exclusion_chromatography_SEC_column_for_your_analysis_with_Waters_SEC_columns_selection_guide_b81f674f65.jpg" alt="Waters: Choose the right Size-exclusion chromatography (SEC) column for your analysis with Waters SEC columns selection guide." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Waters_Choose_the_right_Size_exclusion_chromatography_SEC_column_for_your_analysis_with_Waters_SEC_columns_selection_guide_b81f674f65.jpg 158w," sizes="100vw" width="1024" height="1013"></p><h4><strong>Addressing the complexity of SEC Separations</strong></h4><p>Experience the advancements in SEC-based technologies to address non-desired specific ionic and hydrophobic interactions for more reliable results with ACQUITY Premier Protein SEC and XBridge Premier Protein SEC Columns and Guards.</p><h5><strong>With MaxPeak Premier SEC Columns, you can:</strong></h5><ul><li>Reproducibly resolve injected sample components that are less than 2x different in size for challenging applications</li><li>Use a ‘platform SEC method’ to reduce method development time and cost</li><li>Ensure batch-to-batch and column-to-column performance</li></ul><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Waters_Classes_of_therapeutic_proteins_separated_on_an_ACQUITY_Premier_Protein_SEC_Column_d3f74a8ea4.jpg" alt="Waters: Classes of therapeutic proteins separated on an ACQUITY Premier Protein SEC Column." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Waters_Classes_of_therapeutic_proteins_separated_on_an_ACQUITY_Premier_Protein_SEC_Column_d3f74a8ea4.jpg 234w," sizes="100vw" width="1024" height="682"></p>

Products from category GPC/SEC HPLC columns from Waters distributed by Waters Corporation (Europe) - page 1

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