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.<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">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.<h3>The three tiers of biomarker assays</h3>The workshop opened with a review of the widely accepted three-tier framework that guides biomarker development from early discovery through clinical validation:<h4>Tier 3 – discovery</h4>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.<h4>Tier 2 – verification</h4>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.<h4>Tier 1 – validation</h4>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.Each tier represents a critical step toward ensuring that biomarker candidates can ultimately deliver reliable patient benefit.<h3>The central challenge: from sample to signal</h3>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.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.<h3>Technological innovation powering a paradigm shift</h3>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:<ul><li>Thermo Scientific Orbitrap Astral mass spectrometer Optimized for discovery workflows, the Astral system delivers rapid acquisition and deep proteome coverage while maintaining high precision across large cohorts.</li><li>Thermo Scientific Stellar platform 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>Thermo Scientific OptaSpray Ion Source (under evaluation) A hands-free ionization source designed to deliver consistent spray performance with simplified maintenance, supporting reproducibility across thousands of injections.</li></ul>Together, these technologies create a smoother continuum across assay tiers, shortening timelines and reducing barriers to clinical translation.<h3>Case study: Inflammatory bowel disease (IBD) cohort</h3>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.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.<h3>From high quantity to high quality</h3>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.This shift enables faster discovery while increasing confidence that candidate biomarkers are ready for downstream validation and clinical follow-up.<h3>The future of biomarker translation</h3>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.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.Watch the full workshop recording to <a target="_blank" rel="noopener noreferrer" href="https://www.youtube.com/watch?v=ziyffQzZTwk">explore the data, workflows, and results behind this end-to-end approach to biomarker discovery and validation.</a><h3>Intended use disclaimer</h3>General Laboratory Equipment – Not For Diagnostic Procedures. 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.<h3>Resources</h3>Workshop &amp; educational content<ul><li>MSACL 2025 workshop recording: <a target="_blank" rel="noopener noreferrer" href="https://www.youtube.com/watch?v=ziyffQzZTwk">Accelerating Biomarker Discovery and Validation</a></li><li>Other MSACL workshop recordings coming soon</li></ul>Thermo Fisher Scientific Product Pages<ul><li><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/2207">Thermo Scientific TSQ Certis Mass Spectrometer</a></li><li><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/836">Thermo Scientific Orbitrap Astral Mass Spectrometer</a></li><li><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/1149">Thermo Scientific Stellar Mass Spectrometer</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>Peer-Reviewed Literature<ul><li>Baker ES et al. <a target="_blank" rel="noopener noreferrer" href="https://europepmc.org/article/MED/22943415">Mass spectrometry for translational proteomics: progress and clinical implications.</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">An Empirical Approach to Signature Peptide Choice for Selected Reaction Monitoring.</a> Clinical Chemistry (2016).</li><li>Fu Q et al. <a target="_blank" rel="noopener noreferrer" href="https://doi.org/10.1002/mas.21750">Automated proteomic sample preparation: The key component for high throughput and quantitative mass spectrometry analysis.</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">Highly Reproducible Automated Proteomics Sample Preparation Workflow for Quantitative Mass Spectrometry.</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">A Proteomics Pipeline for Generating Clinical Grade Biomarker Candidates from DIA-MS Discovery.</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">Development and Clinical Evaluation of a Multiplexed Health Surveillance Panel Using Ultra High-Throughput PRM-MS in an Inflammatory Bowel Disease Cohort.</a> Angewandte Chemie International Edition (2025).</li></ul><blockquote>Visit us on&nbsp;<a target="_blank" rel="noopener noreferrer" href="https://www.linkedin.com/showcase/72003132/admin/dashboard/">LinkedIn:</a>&nbsp;#Omics #BiomarkerDiscovery #MassSpectrometry #ClinicalResearch</blockquote>

Accelerating Biomarker Discovery and Validation: From Discovery to Clinical Utility

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;An ‘ILC’ is the organisation, performance and evaluation of measurements or tests on the same or similar items by two or more laboratories in accordance with predetermined conditions [1]. ILCs have a variety of overall – and detailed – objectives, the three most common [2] being:<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"><h4>Some comparisons have special names&nbsp;</h4>The evaluation of participant (laboratory, organisation or individual) performance is typically referred to as ‘proficiency testing’ (PT) or ‘external quality assessment’ [1]. When the main objective is evaluating the performance of, for example, a candidate standard method, the ILC is often called a ‘method performance study’ or a ‘collaborative study’ [2, 3]. The former is quite clear whereas wording such as “collaborative” and “cooperative” 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 ‘material certification study’. Special ILCs used to demonstrate measurement capabilities of National Metrology Institutes are called ‘key comparisons’, ‘supplementary comparisons’, and ‘pilot studies’ [5].&nbsp;<h4>Some terms can be confusing&nbsp;</h4>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;Terms like ‘measurement audit’, ‘interlaboratory testing scheme’, ‘measurement comparison scheme’, ‘rapid performance evaluation scheme’ and ‘intercalibration’ may not correctly reflect the category of laboratory involved, or the type of work participants do during the ILC.&nbsp;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].<h4>Let’s try to harmonise&nbsp;</h4>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;<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">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;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!

Let’s call a PT scheme a PT scheme!

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.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.<h3>Registration</h3><blockquote>👉<a target="_blank" rel="noopener noreferrer" href="https://rafa.easyevent.eu/tickets/">Register to attend RAFA 2026!</a>Early-bird registration until 30 June, 2026</blockquote>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 September 2026 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 RAFA2026@vscht.cz.As soon as payment of registration fee is processed, you will also receive by e-mail (iii) confirmation of payment.<h4>Registration Fees</h4><ul><li>Smart rate (Until 30 June, 2026): € 655</li><li>Regular registration (Until 30 September, 2026): € 855</li><li>Late registration (From 1 October, 2026): € 955</li><li>Student rate*&nbsp;<ul><li>Until 30 June, 2026: € 465</li><li>From 1 July, 2026: € 605</li></ul></li></ul>* The proof of student status (e.g. copy of a student identify card) is requested as an attachment of the registration form.<h5>The regular registration fee will include:</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>In the registration form you can register free of charge for the welcome drink and you can also order ticket(s) for the conference dinner (€ 85).Please note that your registration is firm when your payment has been received.<h3>Abstract submission</h3><blockquote>👉<a target="_blank" rel="noopener noreferrer" href="https://rafa.easyevent.eu/tickets/">Submit your ABSTRACT HERE!</a>In order to submit an abstract, you must first register to attend RAFA 2026. After registration you will receive an access to the Member section where you can submit your abstract(s).</blockquote>&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 RAFA2026@vscht.cz.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.The abstract will be reproduced exactly as submitted. No proofreading will be done, although some corrections may be requested by the reviewers.If you need to withdraw your abstract, a written statement reflecting the reasons for this decision must be sent to RAFA2026@vscht.cz no later than September 30, 2026.<h4>Important notice:</h4><blockquote>1 registered participant can submit no more than 2 abstracts.</blockquote>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.The text of the abstract should be limited to 3000 characters including spaces. Tables and pictures are not allowed.Abstracts of oral presentations and posters will be included into the "e-Book of Abstracts" only after receipt of the conference registration fee. Any payment of the registration fee has to be received until September 30, 2026, otherwise contribution(s) will not be included into the e-Book of Abstracts and the Conference programme.<h3>Program</h3><h4>Invited Speakers</h4><h5>Food allergen risk assessment: Past, present, future</h5><ul><li>Ben Remington from Remington Consulting Group B.V., Utrecht, the Netherlands &amp; University of Nebraska, USA</li></ul>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.<h5>Unmasking hidden adulteration in honey: Strategies for detecting and characterizing honeys produced from sugar-fed colonies</h5><ul><li>Oscar Nuñez Burcio from University of Barcelona, Barcelona, Spain</li></ul>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.<h5>Analytical and toxicological methods for safety of food contact materials</h5><ul><li>Erich Leitner from Graz University of Technology, Institute of Analytical Chemistry and Food Chemistry, Graz, Austria</li></ul>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.<h5>Data-driven strategies to reduce complexity in non-target HRMS analysis of food samples</h5><ul><li>Anneli Kruve from Stockholm University, Stockholm, Sweden</li></ul>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.<h5>Role of AI in the identification of emerging food systems risks</h5><ul><li>Ákos Bernard Jóźwiak from Syreon Research Institute, Budapest, Hungary</li></ul>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.<h5>Challenges of microplastics analysis in the context of food safety</h5><ul><li>Dorte Herzke from Norwegian Institute of Public Health, Oslo, Norway</li></ul>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.<h5>Never-ending analytical challenges in PFAS analysis of food</h5><ul><li>Darina Dvořáková from University of Chemistry and Technology Prague, Prague, Czechia</li></ul>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.<h5>An overview of the latest scientific knowledge on process contaminants in food for appropriate risk management measures</h5><ul><li>Thierry Delatour from Nestlé Research, Lausanne, Switzerland.</li></ul>Recent scientific findings related to acrylamide and furans formation, occurrence and analytical methods in food provide important insights for risk management.

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

Article

Events

Academy

Science and research

Video

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.

Eurachem

Watrex Streamline RI1 Refractive index HPLC detector

The Watrex Streamline RI1 Refractive Index Detector is an essential component in high-performance liquid chromatography (HPLC) systems.

Streamline™ RI1 refractive index detector is suitable for detecting compounds with little or no UV activity such as alcohols, sugars, lipids or polymers. This instrument is designed for use in analytical HPLC (high performance liquid chromatography) as well as for GPC (gel permeation chromatography) applications.<h3>FEATURES</h3><ul><li>Advanced temperature control for high sensitivity and reproducibility</li><li>Prime purge valve</li><li>Long-life LED light source</li><li>Pressure resistant flow cell</li></ul><h3>TECHNICAL SPECIFICATION</h3><ul><li>Light Source: Long-life LED</li><li>Refractive index Range: 1.00 - 1.75 RIU</li><li>Baseline Noise: ± 2.5 nRIU</li><li>Baseline Drift: 200 nRIU/h</li><li>Linearity: &gt; 1000 μRIU</li><li>Flow cell pressure resistance: 5 bar</li><li>Flow cell volume: 15 μl</li><li>Time constant: 0.00/0.01/0.02/0.05/0.1/0.2/0.5/1.0/2.0/5.0/10.0 s</li><li>Analog Output: 1x 0-2.5V</li><li>Outputs: Event 1, Start (OUT), Error (OUT), + 5 V, 24 V Valve</li></ul><h3>Ordering information:</h3><h5>PN/Component:</h5><ul><li>SRI101-001 Watrex Streamline™ RI refractive index detector (Price 7 018 € ex VAT)</li></ul>You can also visit this product on the <a target="_blank" rel="noopener noreferrer" href="https://watrex.com/obchod/chromatography/detectors/other-hplc-detectors/streamline-ri1-detector/?utm_source=labrulez&amp;utm_medium=propagace&amp;utm_campaign=labrulez_produkty">Watrex website</a>.

Watrex Streamline VD1 Viscosimetric HPLC detector

 Watrex Streamline™ VD1 viscosimetric detector is designed for detailed characterization of polymer compounds in both aqueous and organic solvents.

Streamline™ VD1 viscosimetric detector measures absolute intrinsic viscosity and is ideal as a detector for online monitoring in any GPC system. VD1 enables measurement of absolute molecular size using Wheatstone bridge operating principle.<h3>FEATURES</h3><ul><li>High sensitivity and stability</li><li>Low-noise</li><li>Open protocol digital data format</li><li>Direct dual analog output</li></ul><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Watrex_Watrex_Streamline_VD_1_Viscosimetric_detector_Universal_calibration_from_VD_1_data_1_149c741933.jpg" alt="Watrex: Watrex Streamline VD1 Viscosimetric detector - Universal calibration from VD1 data 1"><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Watrex_Watrex_Streamline_VD_1_Viscosimetric_detector_Universal_calibration_from_VD_1_data_2_a616c498e8.jpg" alt="Watrex: Watrex Streamline VD1 Viscosimetric detector - Universal calibration from VD1 data 2"><h3>TECHNICAL SPECIFICATION</h3><ul><li>Wavelength Range: 190 – 720 nm</li><li>Baseline Noise: ± 1 x 10-5 AU (@240 nm, 2 sec. risetime)</li><li>Baseline Drift: &lt; 3 x 10-4 AU/h</li><li>Wavelength Accuracy: ± 0.5 nm</li><li>Wavelenghth Reproducibility: ± 0.1 nm</li><li>Mean Pixel Pitch: 2.2 nm</li><li>Resolution (λ FWHM): 7 nm</li><li>Linearity: &gt; 2.5 AU</li><li>Wavelength Program: Programmable, 10 steps</li><li>Analog Output (optional): 1x 1 V</li><li>Options: Dual channel configuration, thermostated flow cell</li></ul><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Watrex_Watrex_Streamline_VD_1_Viscosimetric_detector_Technical_specification_76756715f6.jpg" alt="Watrex: Watrex Streamline VD1 Viscosimetric detector - Technical specification"><h3>Ordering information:</h3><h5>PN/Component:</h5><ul><li>SVD101-001 Watrex Streamline™ VD1 viscosimetric detector (Price 19 741 € ex VAT)</li></ul>You can also visit this product on the <a target="_blank" rel="noopener noreferrer" href="https://watrex.com/obchod/chromatography/detectors/other-hplc-detectors/streamline-vd1-detector/?utm_source=labrulez&amp;utm_medium=propagace&amp;utm_campaign=labrulez_produkty">Watrex website</a>.

Watrex Streamline CT1/CT1i HPLC Column thermostat

Watrex Streamline™ CT1i column thermostat is an ideal tool for maintaining stable separation temperatures.

Watrex Streamline CT1/CT1i column thermostat is an ideal tool to grant stable separation temperature even if laboratory temperature fluctuates during the day. It is also essential instrument in sugar analysis and/or many applications requiring higher column temperature. An optional built-in manual syringe front loaded sample injector increases usage comfort.<h3>FEATURES</h3><ul><li>Excellent temperature stability</li><li>Heating up to 100°C</li><li>Thermal fuse against overheating</li><li>Up to 3 columns with length of 250 mm can be placed in the thermostat</li><li>Color touch panel control</li><li>Possibility of installing manual injection valve</li></ul><h3>TECHNICAL SPECIFICATION</h3><ul><li>Temperature range: 10 °C above ambient temperature to 100 °C</li><li>Temperature accuracy: max. 0,5 % of actual temperature</li><li>Temperature stability: RSD &lt; 0,4 %</li><li>Settability: 0,1 °C</li><li>Internal dimensions: 320 x 50 x 30 mm (L x W x H)</li><li>Compartment material: PTFE coated metal</li><li>Compartment connection: USB</li><li>Control: build-in color touch panel, datasystem</li></ul><h3>Ordering information:</h3><h5>PN/Component:</h5><ul><li>ST101-001 Streamline CT1 Columm Thermostat (Price 1 720 € ex VAT)</li><li>ST101-002 Streamline CT1i Columm Thermostat with manual injector</li></ul>You can also visit this product on the <a target="_blank" rel="noopener noreferrer" href="https://watrex.com/obchod/chromatography/column-thermostats/streamline-ct1-columm-thermostat/?utm_source=labrulez&amp;utm_medium=propagace&amp;utm_campaign=labrulez_produkty">Watrex website</a>.

Watrex SPR-200 Solvent saver

Watrex SPR-200 Solvent Recycler is designed to save up to 90% of mobile phase during isocratic HPLC.

This Solvent Recycler saves up to 90% of mobile phase by redirection of the pure solvent to the solvent reservoir during the isocratic HPLC. The stand alone device is powered by 5 V DC from power adapter or from computer USB port. Working parameters (Threshold and Delay) are easily set on the display using a membrane keyboard.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Watrex_Watrex_SPR_200_Solvent_saver_I_Nputs_694d991f2c.jpg" alt="Watrex: Watrex SPR-200 Solvent saver - INputs">The SPR-220™ Solvent Recycler continuously monitors the output signal of the chromatography detector and displays its current value on the built-in display. A highresolution analog-to-digital converter provides data for further evaluation in the built-in processor. If the input signal level exceeds a preset value (Threshold), the SPR-200 will redirect the flow to the waste.When the signal drops, the solvent recycler waits for the transport delay and then switches the mobile phase back to the reservoir. An autosampler injection marker connected to the SPR-200 ZERO input can be used to zero the input signal at the time of injection.<h3>FEATURES</h3><ul><li>Stand alone operation</li><li>Detachable valve</li><li>Possibility of manual Waste/Recycle switching</li></ul><h3>TECHNICAL SPECIFICATION</h3><ul><li>Detector compatibility: compatible with any HPLC detector</li><li>Connection: 1/16″ O.D. tubing, 1/4″-28 flat bottom fittings</li><li>Maximum pressure: 30 p.s.i./0,2 MPa</li><li>Wetted material: PEEK, PTFE</li><li>Input range: +/- 1 V or +/- 100 mV, user selectable</li><li>Computer connection: μUSB</li><li>TTL/contact closure input: configurable (ZERO, start, valve position)</li><li>Power: 5V DC/&lt;100 mA (power supply or computer USB port)</li><li>User interface: large character LCD alphanumeric display + membrane keypad</li></ul><h3>Ordering information:</h3><h5>PN/Component:</h5><ul><li>SPR200-001 SPR-200 Solvent Recycler, PEEK version (Price 1 250 € ex VAT)</li><li>SPR200-002 SPR-200 Solvent Recycler, PTFE version (Price 1 250 € ex VAT)</li></ul>You can also visit this product on the <a target="_blank" rel="noopener noreferrer" href="https://watrex.com/?s=SPR-200+Solvent&amp;post_type=product&amp;dgwt_wcas=1?utm_source=labrulez&amp;utm_medium=propagace&amp;utm_campaign=labrulez_produkty">Watrex website</a>.

Watrex P102 HPLC pump, Stainless Steel

Watrex P102 high performance liquid chromatography (HPLC) pump is designed to be a reliable component within a basic analytical or sophisticated research instruments.

Watrex P102 high performance liquid chromatography (HPLC) pump is designed to be a reliable component within a basic analytical or sophisticated research instruments.<blockquote>Price: 4 556<bdi>&nbsp;€ ex VAT</bdi></blockquote>While ideal for HPLC applications, the Model P102 pump is also useful as a metering pump for general laboratory or industrial use. The pump features dual self flushing pump heads with overlapping cams for reduced pulsation.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Watrex_Delta_Chrom_P102_pump_red_a35f480572.jpg" alt="Watrex: P102 HPLC pump, Stainless Steel" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Watrex_Delta_Chrom_P102_pump_red_a35f480572.jpg 208w," sizes="100vw" width="1020" height="765"><h3>KEY FEATURES</h3>Double Piston Design: The double piston design ensures exceptional accuracy and precision in the delivery of solvents, making it ideal for applications that demand the utmost reliability.Wide range of operating conditions: With a wide range of flow rates, from the minutest quantities to larger volumes, our HPLC pump adapts to your diverse experimental needs without compromising precision. Handle high-pressure applications with confidence. Our pump delivers a maximum pressure of&nbsp;35 MPa, ensuring efficiency and reliability in even the most challenging chromatographic separations.Stainless Steel or PEEK Versions: Choose the material that suits your needs. Opt for the durability of stainless steel or the biocompatible advantages of PEEK. Both versions maintain high chemical resistance, making them suitable for a diverse range of chromatographic solvents.Efficient Pulse Dampener: Our integrated pulse dampener minimizes pressure fluctuations, ensuring a smooth and controlled flow. Experience enhanced separation quality and purity, thanks to the efficient dampening of pulsations.Versatile Applications: Whether you’re conducting routine analytical experiments or pushing the boundaries of chromatographic research, our pump caters to a wide array of applications, ensuring versatility in your lab.Demanding Dosing Applications: Excel in applications that demand precise and stable dosing. Achieve a stable jet stream for your research experiments, ensuring accuracy and reliability in every sampling.High-Quality Construction: Crafted with durability in mind, our pump is built to withstand the rigors of daily laboratory use. The robust construction ensures longevity and reliability.Chemical Compatibility: The pump is designed to handle a variety of solvents with ease, providing excellent chemical compatibility. This feature is crucial for researchers working with diverse samples and experimental conditions.Intuitive Controls: The user-friendly interface simplifies pump operation, allowing for easy programming and monitoring. Spend less time on instrument setup and more time focusing on your research.Applications: Whether you’re in pharmaceuticals, biotechnology, environmental analysis, or academic research, our HPLC pump is the go-to solution for achieving unparalleled precision in liquid chromatography.Conclusion: Elevate your chromatography experiments with our HPLC pump—where precision meets reliability. Experience the future of liquid chromatography and unlock new possibilities in your laboratory. Contact us today to discover how our HPLC pump can transform your research endeavors.<h3>TECHNICAL SPECIFICATION</h3><ul><li>Flow Rates: 0,01 ml/min – 9,99 ml/min with step 0.01 ml/min (analytical)</li><li>Pressure: 42 Mpa/6000 psi (analytical, PEEK)</li><li>Flow precision: ± 0,2% RSD @ 1mL/min. and 7 MPa psi&nbsp;</li><li>Flow accuracy: ± 1% @ 1mL/min. and 7 MPa psi (analytical)</li><li>Pressure accuracy: ± 2% of full-scale, with 80:20 H2O/IPA @ 7 MPa</li><li>Pulsation: better than ± 0.5% @ 1mL/min. and 7 MPa&nbsp;</li><li>Remote control: USB</li><li>Remote control: Start, Stop, Status, Error</li></ul>You can also visit this product on the <a target="_blank" rel="noopener noreferrer" href="https://watrex.com/obchod/chromatography/pumps/isocratic-pumps/p102-hplc-pump-dual-head-stainless-steel/?utm_source=labrulez&amp;utm_medium=propagace&amp;utm_campaign=labrulez_produkty">Watrex website</a>.

Watrex Streamline FC1 Fraction Collector

The fully automated fraction collector FC1 offers a universal solution for a number of applications requiring the collection of fractions, e.g. protein purification, preparative chromatography.

The fully automated fraction collector FC1 offers a universal solution for a number of applications requiring the collection of fractions, e.g. protein purification, preparative chromatography or other methods for obtaining samples by fractionation.<blockquote>Price: 4 260<bdi>&nbsp;€ ex VAT</bdi></blockquote>For advanced programming and connection to chromatography software, the device is equipped with a USB interface. FC1 is supported by the <a target="_blank" rel="noopener noreferrer" href="https://lcms.cz/products/305">Clarity Chromatography Station</a><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Watrex_schema_procesu_sberu_frakci_pomoci_frakcni_kolektor_FC_1_fa579d59f2/Watrex-schema-procesu-sberu-frakci-pomoci-frakcni-kolektor-FC1.png" alt="Watrex: Schematic of the fraction collection process using the FC1 fraction collector">The robust design of the FC1 ensures reliable X-Y displacement that carries the switching valve. Placing the fraction switch directly above the receiving vessel minimizes dead volume between fractions.Depending on the required volume of fractions, different types of test tube stands are offered with the device. Furthermore, it is also possible to use large-volume containers.The operator controls and programs the fraction collector from the touch screen on the front panel of the device using intuitively arranged screens with adjustable parameters for a given fraction collection series.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Watrex_Nastaveni_treshold_limitu_pro_sber_frakci_pomoci_sberace_frakci_FC_1_f48d645dfc/Watrex-Nastaveni-treshold-limitu-pro-sber-frakci-pomoci-sberace-frakci-FC1.jpg" alt="Watrex: Setting the treshold limit for fraction collection using the FC1 fraction collector"><h3>FEATURES</h3><ul><li>Simple operation</li><li>Color touch panel control</li><li>Optional analog input</li><li>Selection of rack types</li><li>Clarity CDS supported</li></ul><h3>TECHNICAL SPECIFICATION</h3><ul><li>Max. flow: 50 ml/min</li><li>Wetted Materials: PTFE, PEEK</li><li>User control: Color touch panel</li><li>PC connection: USB</li><li>External control: TTL (contact closure) - RUN, STOP, NEXT, COLLECT</li><li>Power supply: 24V DC external power supply</li></ul><h3>Ordering information:</h3><h5>PN/Component:</h5><ul><li>SFC101-001 Streamline™ FC1 Fraction Collector</li><li>SFC101-002 Cooling option for FC1 Fraction Collector</li><li>SFC101-003 Analog Signal Monitoring, Input for FC1 Fraction Collector</li></ul>You can also visit this product on the <a target="_blank" rel="noopener noreferrer" href="https://watrex.com/obchod/chromatography/dedicated-instruments/streamline-fc1-fraction-collector/?utm_source=labrulez&amp;utm_medium=propagace&amp;utm_campaign=labrulez_produkty">Watrex website</a>.

Watrex UFO Solvent Recycler

UFO Solvent Recycler saves up to 90% of mobile phase by redirection of the pure solvent to the solvent reservoir during the isocratic HPLC.

This compact device saves up to 90% of mobile phase by redirection of the pure solvent to the solvent reservoir during the isocratic HPLC. The device is powered by 5 V DC from computer USB port or power adapter. Working parameters (Threshold and Delay) are set using user friendly software.<blockquote>Price: 635<bdi>&nbsp;€ ex VAT</bdi></blockquote>The UFO Solvent Recycler continuously monitors the output signal of the chromatography detector and displays its current value in the application on computer. A high-resolution analog-to-digital converter provides data for further evaluation in the built-in processor.If the input signal level exceeds a preset value (Threshold), the UFO recycler will redirect the flow to the waste. When the signal drops, the solvent recycler waits for the transport delay and then switches the mobile phase back to the reservoir. An autosampler injection marker connected to the UFO recycler START input can be used to zero the input signal at the time of injection.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/UFO_schema_6a4cdc0ed4/UFO_schema.png" alt="Watrex: Principle and process of mobile phase recycling during isocratic HPLC using the UFO system"><h3>FEATURES</h3><ul><li>Very compact design</li><li>Simple operation</li></ul><h3>TECHNICAL SPECIFICATION</h3><ul><li>Detector compatibility: compatible with any HPLC detector</li><li>Connection: 1/16″ O.D. tubing, 1/4″-28 flat bottom fittings</li><li>Maximum pressure: 30 p.s.i./0,2 MPa</li><li>Wetted material: PEEK, PTFE</li><li>Input range: +/- 1 V or +/- 100 mV, user selectable</li><li>Computer connection: USB-A</li><li>TTL/contact closure input: configurable (ZERO, start, valve position)</li><li>Power: 5V DC/&lt;100 mA (power supply or computer USB port)</li><li>User interface: PC Windows based software</li></ul><h3>Ordering information:</h3><h5>PN/Component:</h5><ul><li><a target="_blank" rel="noopener noreferrer" href="https://watrex.com/obchod/chromatography/dedicated-instruments/ufo-solvent-recycler-peek-version/?utm_source=labrulez&amp;utm_medium=propagace&amp;utm_campaign=labrulez_produkty">UFO000-001</a> UFO™ Solvent Recycler , PEEK version</li><li><a target="_blank" rel="noopener noreferrer" href="https://watrex.com/obchod/chromatography/dedicated-instruments/ufo-solvent-recycler-ptfe-version/?utm_source=labrulez&amp;utm_medium=propagace&amp;utm_campaign=labrulez_produkty">UFO000-002</a> UFO™ Solvent Recycler , PTFE version</li></ul>

Watrex PCRS-300 Post-column derivatization

The PCRS-300 post-column reaction system is a combination of a precision low-pulse high-pressure pump and thermostat in one unit.

Compact system for post-column derivatization consisting of low-pulse reagent pump with selector valve and tempered reaction chamber for reaction coil.<blockquote>Price: 5 033<bdi>&nbsp;€ ex VAT</bdi></blockquote>A selector valve at the inlet of the pump allows choice between reagent and flushing solvent. The system is controlled through color touch panel placed on the front of main unit.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Watrex_PCRS_300_3_d3a79a1a57/Watrex-PCRS-300-3.jpg" alt="Watrex: Schematic of the Watrex PCRS-300 low-pulse pump system for post-column derivatisation"><h3>FEATURES</h3><ul><li>Very low pulse reagent delivery</li><li>Excellent temperature stability</li><li>Heating up to 150°C</li><li>Number of reagent coil options</li><li>Thermal fuse against overheating</li><li>Color touch panel control</li></ul><h3>TECHNICAL SPECIFICATION</h3><ul><li>Wetted materials: PEEK, PTFE, HDPE, ruby, sapphire</li><li>Flow rate range: 0,01 – 9,99 ml/min</li><li>Flow rate accuracy: &lt; 2%</li><li>Temperature range: up to 150 °C</li><li>Temperature stability: &lt; +/- 0,1 °C</li><li>Liquid connections: Inlet – 1/8″, 1/4″-28 flat bottom; Outlet – 1/16″, UNF 10-32</li><li>Connections: USB, TTL I/O control (ready out, shutdown in)</li><li>Control: build-in color touch panel</li><li>Dimensions: 310 x 270 x 170 mm (WxDxH, main unit)</li><li>Power requirements: 19-20V DC/4,7A</li></ul><h3>Ordering information:</h3><h5>PN/Component:</h5><ul><li>PCRS300-001 Post Column Reaction System</li><li>PCRS300-002 Reaction coil select from 250µl - 2000µl in Stainless Steel</li><li>PCRS300-003 Reaction coil select from 500µl - 1000µl in PEEK</li><li>PCRS300-004 Reaction coil select from 500µl - 1000µl in PTFE</li><li>PCRS300-999 Reaction coil , customized</li></ul>You can also visit this product on the <a target="_blank" rel="noopener noreferrer" href="https://watrex.com/obchod/chromatography/dedicated-instruments/pcrs-300-post-column-reaction-system-2/?utm_source=labrulez&amp;utm_medium=propagace&amp;utm_campaign=labrulez_produkty">Watrex website</a>.

Watrex CTC 330 HPLC Column Oven

Column thermostat CTC-330 for HPLC with a temperature range from 10°C above ambient temperature to 120°C

<a target="_blank" rel="noopener noreferrer" href="https://watrex.com/obchod/chromatography/column-thermostats/ctc-330-column-oven/?utm_source=labrulez&amp;utm_medium=propagace&amp;utm_campaign=labrulez_produkty">Column thermostat CTC-330 </a>for HPLC with a temperature range from 10°C above ambient temperature to 120°C. Internal dimensions: 490 x 60 x 40 mm (L x W x D). Temperature accuracy 0.5%, temperature stability 0.2 °C. Communication with a computer via the built-in USB interface. CDS Clarity driver is standard part of datasystem installation.<blockquote>Price: 1 559 <bdi>€ ex VAT</bdi></blockquote><h3>FEATURES</h3><ul><li>Excellent temperature stability</li><li>Heating up to 120°C</li><li>Thermal fuse against overheating</li><li>USB interface</li><li>Color touch panel control</li></ul><h3>TECHNICAL SPECIFICATION</h3><ul><li>Temperature range: 10 °C above ambient temperature up to 120 °C</li><li>Temperature accuracy: max. 0,5% of actual temperature</li><li>Tempearture stability: &lt; +/-0,1 °C over full operating range</li><li>Settability: 0,1 °C</li><li>Internal dimensions: 490 x 60 x 40 mm (L x W x H)</li><li>Compartment material: black anodized aluminium</li><li>Computer connection: μUSB</li><li>Control: build-in color touch panel</li><li>Power requirements: 19-20V DC/3A</li></ul><h3>Ordering information:</h3><h5>PN/Component:</h5><ul><li>CTC330-001 CTC-330 Column Oven</li></ul>

Watrex Streamline Isocratic HPLC system

Streamline™ isocratic HPLC system consists of one P1 pump, CT1i column thermostat with manual injector and UV1 UV/Vis detector.

Streamline™ isocratic HPLC system consists of one <a target="_blank" rel="noopener noreferrer" href="https://watrex.com/?s=streamline+p1+pump&amp;post_type=product&amp;dgwt_wcas=1?utm_source=labrulez&amp;utm_medium=propagace&amp;utm_campaign=labrulez_produkty">P1 pump</a>, <a target="_blank" rel="noopener noreferrer" href="https://watrex.com/obchod/chromatography/column-thermostats/streamline-ct1-columm-thermostat/?utm_source=labrulez&amp;utm_medium=propagace&amp;utm_campaign=labrulez_produkty">CT1 column thermostat </a>with manual injector and <a target="_blank" rel="noopener noreferrer" href="https://watrex.com/?s=uv1+uv&amp;post_type=product&amp;dgwt_wcas=1?utm_source=labrulez&amp;utm_medium=propagace&amp;utm_campaign=labrulez_produkty">UV1 UV/Vis detector</a>. Modular concept offers easy and economical upgrades or configuration modifications such as additional detectors, autosampler or fraction collector.<h3>FEATURES</h3><ul><li>Optimized pump mechanics with parallel piston design offers excellent flow rate accuracy and low pulsation</li><li>Excellent signal-to-noise ratio of the UV1 detector</li><li>Data acquisition, processing and instrument control is done by Clarity Chromatography Station</li></ul><h3>COMPONENT SPECIFICATION</h3><h5>SPECIFICATIONS - P1 HPLC pump:</h5><ul><li>Flow Rates: 0.001 to 10.000 mL/min</li><li>Pressure: 0 to 6,000 psi (42 MPa)</li><li>Flow precision: &gt; 0.2% RSD</li><li>Flow accuracy: ± 1 % @ 1mL/min and 7 MPa,</li><li>Pressure accuracy: ± 2% of full-scale, with 80:20 H2O/IPA @ 7 MPa</li><li>Pulsation: ± 0.5 % @ 1mL/min and 7 MPa</li><li>Remote inputs: USB</li></ul><h5>SPECIFICATIONS - UV1 UV detector:</h5><ul><li>Light Source: Deuterium Lamp, Tungsten Lamp</li><li>Wavelength Range: 190 – 800 nm</li><li>Baseline Noise: 1 x 10-5 AU (@240 nm, 2 sec. risetime)</li><li>Baseline Drift: less than 3 x 10-4 AU/h</li><li>Wavelenghth Reproducibility: ± 0.1 nm</li><li>Linearity: better than 2.5 AU</li><li>Analog Output: 1x 1 V</li></ul><h5>SPECIFICATIONS - CT1 Column thermostat:</h5><ul><li>Temperature range: 10 °C above ambient temperature to 100 °C</li><li>Temperature accuracy: max. 0,5 % of actual temperature</li><li>Temperature stability: RSD &lt; 0,4 %</li><li>Settability: 0,1 °C</li><li>Internal dimensions: 320 x 50 x 30 mm (L x W x H)</li><li>Compartment material: PTFE coated metal</li><li>Compartment connection: USB</li><li>Control: build-in color touch panel, datasystem</li></ul><h5>SPECIFICATIONS - <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/999">Clarity™ Chromatography Station</a>:</h5><ul><li>Advanced data acquisition and evaluation, enables routine separations with pre-set methods for experimental settings. PC Win 10 Professional with LCD monitor included</li></ul><h3>Ordering information:</h3><h5>PN/Component:</h5><ul><li>SSI101-001 Streamline™ isocratic system (Includes P1 pump,UV1 detector, CT1i column thermostat with manual injector, solvent rack, Clarity datastation)</li><li>SUV99-001 Remove UV1 detector from system</li><li>ST99-002 Remove CT1i column thermostat with manual injector from system</li><li>SPDA90-001 Add PDA1 265 photodiode detector to system</li><li>SRI90-001 Add RI1 Refractive index detector to system</li><li>SAS90-001 Add AS1 Autosampler to system</li><li>SFC90-001 Add FC1 Fraction collector to system</li></ul>

Products focused on HPLC distributed by WATREX Prague - page 3

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