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

Choosing the correct membrane for a syringe filter is an important step in achieving dependable and reproducible analytical results. Whether you work with nylon, PTFE, hydrophilic PTFE, or cellulose acetate filters, the membrane material directly influences filtration efficiency, sample integrity, and overall method performance. In this article, we explore why membrane selection matters, review the characteristics of common membrane materials, and provide practical guidance for choosing the best option for your application.<h4>Why Are Syringe Filters Important?</h4>Syringe filters are routinely used to remove particulate matter from samples prior to analysis. Unfiltered samples can introduce contaminants into chromatographic systems, leading to clogged columns, increased system backpressure, reduced instrument lifetime, and compromised analytical performance.Selecting an appropriate membrane is therefore essential for developing a robust and reliable HPLC workflow. An ideal membrane effectively removes particles while preserving the original composition of the sample. Since the membrane comes into direct contact with both the analyte and the sample solvent, compatibility must always be carefully considered.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/KNAUER_syringe_filters_f3eaa1381e.webp" alt="KNAUER: Syringe filters" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_KNAUER_syringe_filters_f3eaa1381e.webp 156w," sizes="100vw" width="720" height="720">Let’s examine the key factors involved in choosing the most suitable membrane.<h4>Step 1: Consider the Nature of Your Sample</h4>The first and most important factor is the chemical composition of the sample and the solvents involved. Different membrane materials offer different chemical resistance and sample interaction characteristics.<h5>Nylon Membranes</h5>Nylon is one of the most commonly used membrane materials in HPLC laboratories because of its broad compatibility with aqueous solutions and many organic solvents.Recommended applications:<ul><li>Routine filtration of HPLC samples containing aqueous solvents, organic solvents, or mixed mobile phases.</li><li>Removal of suspended particles prior to chromatographic injection.</li><li>General-purpose laboratory filtration where versatility is required.</li></ul>Avoid using Nylon when:<ul><li>Working with strongly acidic solutions or samples with pH values below 3.</li><li>Filtering protein-containing samples, since proteins can adsorb to the membrane surface and reduce recovery.</li></ul><h5>Cellulose Acetate (CA) Membranes</h5>Cellulose acetate membranes exhibit very low protein binding and are widely used for biological and biochemical applications.Recommended applications:<ul><li>Filtration of biological fluids such as serum, plasma, and cell culture media.</li><li>Applications where protein recovery must be maximized.</li><li>Aqueous laboratory procedures involving enzymes or other sensitive biomolecules.</li></ul>Avoid using CA when:<ul><li>Filtering samples containing organic solvents that may damage the membrane.</li><li>Working under highly acidic or highly alkaline conditions that could degrade the material.</li></ul><h5>Hydrophilic PTFE (hPTFE) Membranes</h5>Hydrophilic PTFE combines the exceptional chemical resistance of PTFE with the ability to process aqueous samples without pre-wetting.Recommended applications:<ul><li>Filtration of both aqueous and organic solutions.</li><li>HPLC sample preparation involving mixed solvent systems.</li><li>Applications requiring compatibility across a broad pH range.</li></ul>Avoid using hPTFE when:<ul><li>Processing highly viscous samples that may rapidly clog the membrane.</li><li>Performing PFAS analysis, where fluorinated materials may introduce unwanted contamination.</li></ul><h5>PTFE Membranes</h5>PTFE membranes provide excellent resistance to aggressive chemicals and are especially suitable for demanding solvent environments.Recommended applications:<ul><li>Samples containing strong acids, strong bases, or aggressive organic solvents.</li><li>Environmental, industrial, and chemical analyses involving non-polar solvents such as hexane, toluene, or acetone.</li><li>Filtration of predominantly organic solvent-based samples.</li></ul>Avoid using PTFE when:<ul><li>Filtering aqueous solutions without first wetting the membrane or using a hydrophilic PTFE alternative.</li><li>Working with protein-rich or highly hydrophilic samples where adsorption or poor wetting may occur.</li></ul><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/KNAUER_Fig_1_4_Nylon_top_left_CA_top_right_h_PTFE_bottom_left_and_PTFE_bottom_right_86a6481d0b.jpg" alt="KNAUER: Fig. 1–4 Nylon (top left), CA (top, right), hPTFE (bottom, left), and PTFE (bottom, right)" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_KNAUER_Fig_1_4_Nylon_top_left_CA_top_right_h_PTFE_bottom_left_and_PTFE_bottom_right_86a6481d0b.jpg 157w," sizes="100vw" width="1111" height="1107"><h4>Step 2: Select an Appropriate Pore Size</h4>The membrane pore size determines the level of particulate removal and should be selected according to the requirements of the analytical method.Common pore sizes include:<ul><li>0.2 µm – Suitable for removing very fine particles and for sterile filtration. Frequently used in UHPLC and LC-MS workflows.</li><li>0.45 µm – The standard choice for most routine HPLC applications.</li><li>1.0 µm and larger – Often used for coarse filtration or as a pre-filtration step for heavily contaminated samples.</li></ul>Choosing the correct pore size helps protect instrumentation while minimizing unnecessary sample loss.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/KNAUER_Fig_1_2_0_22_m_left_and_0_45_m_right_Nylon_Syringe_Filter_48ffc3d777.jpg" alt="KNAUER: Fig. 1–2 0.22 µm (left), and 0.45 µm (right) Nylon Syringe Filter" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_KNAUER_Fig_1_2_0_22_m_left_and_0_45_m_right_Nylon_Syringe_Filter_48ffc3d777.jpg 245w," sizes="100vw" width="1177" height="573"><h4>Step 3: Verify Chemical Compatibility</h4>Before selecting a membrane, confirm that it is compatible with both the sample matrix and the solvents present. Incompatible materials may swell, degrade, release extractables, or alter the composition of the sample.Consulting a solvent compatibility chart is highly recommended whenever unfamiliar solvents or mixtures are involved.<h4>Step 4: Match the Membrane to the Application</h4>Different analytical applications often benefit from specific membrane types.<h5>HPLC Analysis</h5><ul><li>Nylon and PTFE membranes are among the most frequently used options due to their broad chemical compatibility and excellent filtration performance.</li></ul><h5>Protein and Biomolecule Analysis</h5><ul><li>CA, PVDF, and PES membranes are generally preferred because they exhibit low protein binding and help preserve sample recovery.</li></ul><h5>Microbiological Testing</h5><ul><li>Mixed cellulose ester (MCE) membranes are commonly employed for microbial monitoring and microbiological quality control procedures.</li></ul>Selecting a membrane tailored to the analytical objective can significantly improve data quality and method reliability.<h4>Step 5: Evaluate Product Quality and Certification</h4>Not all syringe filters are manufactured to the same standards. For critical applications, select products that comply with recognized quality systems and certifications such as ISO standards or CE requirements.This becomes particularly important in regulated industries, where traceability, consistency, and documented performance are essential.<h4>Practical Recommendations for Using Syringe Filters</h4>Following good filtration practices can further improve analytical performance.<ul><li>Pre-Wet Hydrophobic Membranes: Hydrophobic materials such as PTFE often require pre-wetting with a compatible organic solvent before filtering aqueous samples.</li><li>Avoid Excessive Pressure: Applying excessive force may rupture the membrane or cause leakage. Luer-lock syringes are recommended to provide secure connections and controlled pressure.</li><li>Use Filters Only Once: Syringe filters are intended for single-use operation. Reusing filters increases the risk of carryover and cross-contamination.</li><li>Dispose of Filters Properly: Used syringe filters should be discarded according to laboratory safety procedures and local waste disposal regulations.</li></ul><h4>Final Thoughts</h4>Selecting the right syringe filter membrane is a key factor in obtaining accurate, reproducible, and reliable analytical results. By considering sample composition, solvent compatibility, pore size, and application requirements, laboratories can choose filtration solutions that protect instruments, preserve sample integrity, and improve overall analytical performance.A carefully selected membrane may seem like a small detail, but it can have a substantial impact on the quality and robustness of your entire analytical workflow.<blockquote>If you want to optimize your HPLC workflow, check out our brand-new <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/2380">SEPAPURE Syringe Filter</a>.</blockquote>

How to Choose the Right Membrane for Your Syringe Filter

News from LabRulezLCMS Library - Week 26, 2026

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A unique company dedicated to serving science helping our customers drive productivity and accelerate results. Through our premier brands – Thermo Scientific, Applied Biosystems, Invitrogen, Fisher Scientific and Unity Lab Services.

Thermo Fisher Scientific

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LabRulez

Based in Berlin, KNAUER is a medium-sized, owner-managed company that has been serving the sciences since 1962. We develop and manufacture scientific instruments of superior quality for liquid chromatography, including: Analytical HPLC/UHPLC, Preparative HPLC, Fast protein liquid chromatography (FPLC), Multi-column chromatography/Simulated moving bed (SMB) chromatography. High pressure dosing, in-line detection systems, and osmometry are additional business areas.

KNAUER

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>.

SIELC Alltesta Mini HPLC Autosampler

The Alltesta™ Mini Autosampler is an affordable and dependable solution for automated sample handling in various analytical and liquid handling applications, including HPLC.

The Alltesta™ Mini Autosampler is an affordable and dependable solution for automated sample handling in various analytical and liquid handling applications, including HPLC. With its proprietary alpha/beta mechanical design, this compact autosampler offers direct and comprehensive control of its features, making integration quick and easy. Users can tailor the mini autosampler to their needs with customizable valve configurations, tray designs, and syringe volumes and pressures. Additionally, a built-in shaking feature enables sample mixing before injection and/or simple sample extraction within the vial.
This compact autosampler comes designed with original equipment manufacturer (OEM) customization in mind. Custom shape, color, and communication interfaces can be adapted to integrate with any system. Comprehensive software integration support is provided. Other options include metal-free sampling and reagent addition and mixing capabilities.
<ul>
<li>FRACTION COLLECTION CAPABILITY: A simple software modification can quickly convert this small autosampler into a fraction collector.
</li>
<li>REACTOR PROBE SAMPLER CAPABILITY: A simple software modification can quickly convert this small autosampler into a reactor probe sampler.
</li>
</ul>
This miniature autosampler can also be used as a component of our <a href="https://lcms.labrulez.com/products/1242">Alltesta™ Gradient Automated Analyzer</a> and <a href="https://lcms.labrulez.com/products/1243">Alltesta™ Cromite Analyzer</a>.
<blockquote>
<h4>The price of the Alltesta™ Mini Autosampler varies depending on the specific configuration requested.</h4>
</blockquote>
<h4>Specifications</h4>
<ul>
<li>Dimensions (WHL): 160 x 145 x 195 mm / 6.3 x 5.71 x 7.68 in</li>
<li>Weight: 3 kg / 6.6 lb</li>
<li>Power: 24 V</li>
<li>Capacity: 48 vials or 96-well plate</li>
<li>Pressure: 5000 psi</li>
<li>Needle Wash: Inside and outside</li>
<li>Syringe Capacity: 120µL high-pressure / 4000µL low-pressure stainless / 4000µL low-pressure ceramic</li>
<li>Valve options: 6×2, 7×6 and 10×9 (more details here).</li>
<li>Volume Accuracy: 0.1µL</li>
<li>Communication: RS232 Virtual COM port via USB</li>
</ul>
<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/SIELC_Alltesta_Mini_Autosampler_A_very_simple_schematic_operation_of_the_Alltesta_Autosampler_b79b0ad187.jpg" alt="SIELC: Alltesta™ Mini Autosampler - A very simple schematic operation of the Alltesta™ Autosampler."/>
<h4>Software</h4>
The Alltesta™ Autosampler can be controlled:
<ul>
<li>directly via serial commands (Alltesta™ protocol available upon request, please contact us at support@sielc.com),</li>
<li>directly via our demo software, allowing to learn the whole functionality of the unit (<a href="https://sielc.com/wp-content/uploads/2022/12/Alltesta_Autosampler_Control_Windows_10.zip">Windows 10, 32/64bit</a>, 5Mb; <a href="https://sielc.com/wp-content/uploads/2022/12/Alltesta_Autosampler_Control_Windows_7.zip">Windows 7, 32/64bit</a>, 126Mb).</li>
<li>remotely through our cloud software (as a part of Alltesta™ Analyzer or Alltesta™ Mini Analyzer),</li>
</ul>
Serial communication drivers are available <a href="https://ftdichip.com/drivers/vcp-drivers/">here</a>.

SIELC Alltesta Mini High-Pressure Switching HPLC Valve

The Alltesta™ Mini High-Pressure Switching Valve offers versatility and convenience for laboratory fluid management applications.

The Alltesta™ Mini High-Pressure Switching Valve offers versatility and convenience for laboratory fluid management applications. It features flexible flow switching at varying flow rates and can be used independently or as part of the <a href="https://lcms.labrulez.com/products/124">Alltesta™ Analyzer</a> or <a href="https://lcms.labrulez.com/products/1244">Alltesta™ Autosampler</a>.
With customizable options, including up to 10 available ports on the stator, the valve can be tailored to specific needs. It is built to handle pressures up to 5000 psi (350 bar) and boasts a fast 60 degree switch time of 200 milliseconds.
<h4>Specifications</h4>
<ul>
<li>Power requirements: USB type B</li>
<li>Dimensions (WHL): 63 x 46 x 128 mm / 2.48 x 1.81 x 5.04 in</li>
<li>Weight: 0.45 kg / 0.95 lb</li>
<li>Switching speed for 60 degree: 200 ms</li>
<li>Max pressure: 350 bar (5000 psi)</li>
<li>Ports style: 10-32 thread with conical 1/16″ tube compression type seal</li>
<li>Materials in contact with liquid: coated SS316, Vespel® or PEEK or PTFE</li>
</ul>
<h4>Available Configurations</h4>
<ul>
<li>6x2 Valve</li>
<li>7x6 Valve</li>
<li>10x9 Valve</li>
</ul>
<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/SIELC_SIELC_Alltesta_Mini_High_Pressure_Switching_Valve_Available_Configurations_72e3b13ea2.jpg" alt="SIELC: SIELC Alltesta™ Mini High-Pressure Switching Valve - Available Configurations."/>
<h4>Software</h4>
The Alltesta™ High-Pressure Switching Valve can be controlled:
<ul>
<li>directly via serial commands (option with greatest flexibility, Alltesta™ protocol available upon request, please contact us at support@sielc.com),</li>
<li>directly via our software, allowing to use the whole functionality of the unit without the need for automation (<a href="https://sielc.com/wp-content/uploads/2022/12/Alltesta_Valve_Control_Windows_10.zip">Windows 10, 32/64bit</a>, 6 Mb, <a href="https://sielc.com/wp-content/uploads/2022/12/Alltesta_Valve_Control_Windows_7.zip">Windows 7, 32/64 bit</a>, 127 Mb),</li>
<li>remotely through our cloud software (as a part of <a href="https://lcms.labrulez.com/products/1242">Alltesta™ Analyzer</a>)</li>
<li>operator may also simply press the button on the front of the device to switch it to the next position</li>
</ul>
Serial Communication Drivers are available <a href="https://ftdichip.com/drivers/vcp-drivers/">here</a>.
<h4>Available Custom Options</h4>
<ul>
<li>A High-flow version of the valve (preparative) is available</li>
<li>A metal-free version of the valve is also available.</li>
</ul>
<h4>Valve Rotor Position Indication</h4>
LED color indicates the valve’s rotor position. By pressing the LED, the rotor can be advanced by one position. Depending on the valve configuration, the second press will either advance the rotor forward or backward. Position 1 – LED Green Position 2 – LED Navy Position 3 – LED Purple Position 4 – LED Blue Position 5 – LED Red Position 6 – LED White
<h4>Applications</h4>
<ul>
<li>Column Switching</li>
<li>Solvent Selection</li>
<li>Sample Injection</li>
<li>Sample Cleaning</li>
</ul>

SIELC Alltesta™ Mini LHS (Liquid Handling Station)

The Alltesta™ Mini Liquid Handling Station serves as an affordable, reliable solution for automated sample handling.

The Alltesta™ Mini Liquid Handling Station serves as an affordable, reliable solution for automated sample handling. With its compact design, proprietary alpha/beta mechanical structure, and adjustable operation speeds, it offers comprehensive control for quick and seamless integration with other equipment. The station comes equipped with a built-in sample shaking feature for in-vial sample mixing and extraction, and a needle washing station capable of accommodating up to four solvents.
Designed with Original Equipment Manufacturer (OEM) customization in mind, the Alltesta™ Mini Liquid Handling Station can be tailored to fit any system’s requirements. Custom needle lengths and trays enable the device to accommodate various types of vials. An array of integrated valves and a measuring syringe can be added to the device. Additional customization options, such as metal-free flow paths and customer-specified enclosure colors, are also available.
Comprehensive software integration support is provided to ensure smooth operation and functionality.
<h4>Specifications</h4>
<ul>
<li>Dimensions (WHL): 160 x 145 x 195 mm / 6.3 x 5.71 x 7.68 in</li>
<li>Weight: 2.25 kg / 5 lb</li>
<li>Power: 24 V</li>
<li>Capacity: 48-vial tray or 96-well plate</li>
<li>Needle Wash: Inside and Outside</li>
<li>Communication: RS232 Virtual COM port via USB</li>
</ul>
<h4>Software</h4>
The Alltesta™ LHS can be fully controlled via serial commands. Alltesta™ protocol available upon request, please contact us at support@sielc.com. Serial communication drivers are available <a href="https://ftdichip.com/drivers/vcp-drivers/">here</a>.

SIELC Alltesta Mini Syringe Pump

Alltesta™ Ultra High Pressure Mini Syringe Pump is designed to produce a steady, high pressure, pulsation-free flow, so there is no need for bulky dampeners, mixers, and precision check valve arrangements.

Alltesta™ Ultra High Pressure Mini Syringe Pump is designed to produce a steady, high pressure, pulsation-free flow, so there is no need for bulky dampeners, mixers, and precision check valve arrangements. It can refill prior to each run in less than a minute, and can produce flow rates from as low 1 μL/min to as fast as 4000 μL/min with pressure up to 4000 psi (285 bar).
The Mini Syringe Pump allows for several communication options via its USB/Serial port. Just like the rest of our Alltesta™ line of devices, our serial protocol allows to control and automate every function of the device. We also provide free Windows-based software allowing full control of the device.
<h4>Specifications</h4>
<ul>
<li>Syringe volume: 5.8 mL</li>
<li>Power Requirements 24 VDC</li>
<li>Current Requirements Up to 1.5 A</li>
<li>Dimensions (WHL) 63x167x128 mm / 2.48×6.57×5.04 in</li>
<li>Weight 1.65 kg / 3.7 lb</li>
<li>Flow Rate Range 0.001 to 4 mL/min</li>
<li>Speed Accuracy 1% of full-scale</li>
<li>Linearity Full Range 0.001 to 4.0 mL/min</li>
<li>Pressure 4000 psi (285 bar) continuous</li>
<li>Pressure accuracy ±1 psi</li>
<li>Operating Temperature 0 to 40° C, non-condensing</li>
<li>Inlet/Outlet Thread 10-32 UNF compression type</li>
<li>Materials in contact with liquid SS316, PTFE, PEEK</li>
<li>Communication USB virtual serial port</li>
</ul>
<h4>Software</h4>
The Mini Syringe Pump can be controlled:
<ul>
<li>directly through your software via serial commands (Alltesta™ protocol available upon request, please contact us at support@sielc.com),</li>
<li>remotely through our cloud software (as a part of <a href="https://lcms.labrulez.com/products/1242">Alltesta™ Gradient Automated Analyzer</a> and <a href="https://lcms.labrulez.com/products/1243">Alltesta™ Cromite Analyzer</a>.),</li>
<li>directly via our demo software, allowing to learn the whole functionality of the unit (<a href="https://sielc.com/wp-content/uploads/2022/12/Alltesta_Pump_Control_Windows_10.zip">Windows 10, 32/64bit</a>, 5Mb; <a href="https://sielc.com/wp-content/uploads/2022/12/Alltesta_Pump_Control_Windows_7.zip">Windows 7, 32/64bit</a>, 126Mb)</li>
</ul>
Serial Communication Drivers are available <a href="https://ftdichip.com/drivers/vcp-drivers/">here</a>.
<h4>Available Custom Options</h4>
Metal-free version of the pump includes no metal contact pump head and can be operated up to 4000 psi.

SIELC Alltesta Mini UV-Vis Detector

The Alltesta™ UV-Vis Multi-wavelength Mini Detector is a compact and versatile device that can continuously monitor the optical properties of solutions flowing through it.

The Alltesta™ UV-Vis Multi-wavelength Mini Detector is a compact and versatile device that can continuously monitor the optical properties of solutions flowing through it. The Mini Detector is ideal for use in HPLC, Flow Injection Analysis (FIA), and preparative and flash chromatography.
The device comes standard with four different wavelength channels, including 470 nm (Blue), 520 nm (Green), 630 nm (Red), and a choice between 255 nm or 275 nm for the UV channel. The Mini Detector features a simple setup process with a USB interface that allows it to communicate with the <a href="https://lcms.labrulez.com/products/1242">Alltesta™ Gradient Automated Analyzer</a> or <a href="https://lcms.labrulez.com/products/1243">Alltesta™ Cromite Analyzer</a> or integrate with other instrumentation.
Powered solely by its USB port, this mini detector is capable of monitoring multiple analytes simultaneously. It has a low optical cell volume of &lt; 3 µL, which results in minimal dispersion even at low flow rates, and can collect data at rates of up to 20 sps for all four channels, making it suitable for demanding applications. The Mini Detector boasts low noise and linearity over more than 4 orders of magnitude.
In addition to its compact size and versatility, the Mini Detector also has zero warm-up time and exceptional durability. The detector cell volume is available in two sizes: 3 μL and 10 μL.
<h4>Specifications</h4>
<ul>
<li>Dimensions (WHL): 63 x 46 x 116 mm / 2.48 x 1.81 x 4.57 in</li>
<li>Weight: 0.25 kg / 0.55 lb</li>
<li>Sample Cell Volume: &lt; 3µL</li>
<li>Cell Optical Path: 7.0mm</li>
<li>Liquid Ports: 10-32 UNF</li>
<li>Wavelength Range: 250nm &amp; up</li>
<li>Simultaneous Wavelengths: Up to 4</li>
<li>Data Rate: 20 sps</li>
<li>Noise Level: 0.03 mAU</li>
<li>Power: USB Type B</li>
</ul>
<h4>Software</h4>
The Multi-wavelength Detector can be controlled:
<ul>
<li>directly via serial commands (Alltesta™ protocol available upon request, please contact us at support@sielc.com),</li>
<li>directly via our demo software, allowing to learn the whole functionality of the unit (<a href="https://sielc.com/wp-content/uploads/2022/12/Alltesta_Detector_Control_Windows_10.zip">Windows 10, 32/64bit</a>, 5Mb, <a href="https://sielc.com/wp-content/uploads/2022/12/Alltesta_Detector_Control_Windows_7.zip">Windows 7, 32/64bit</a>, 127Mb)</li>
<li>remotely through our cloud software (as a part of <a href="https://lcms.labrulez.com/products/1242">Alltesta™ Gradient Automated Analyzer</a> and <a href="https://lcms.labrulez.com/products/1243">Alltesta™ Cromite Analyzer</a>).</li>
</ul>
Serial Communication Drivers are available <a href="https://ftdichip.com/drivers/vcp-drivers/">here</a>.

SIELC Alltesta Power Tower for HPLC Alltesta

The Alltesta™ Power Tower acts as a power supply and chromatography data acquisition device, connecting, controlling, and streaming your Alltesta™ devices to our free cloud software at hplc.cloud.

The Alltesta™ Power Tower acts as a power supply and chromatography data acquisition device, connecting, controlling, and streaming your Alltesta™ devices to our free <a href="https://lcms.labrulez.com/products/1250">cloud software</a> at <a href="https://hplc.cloud/">hplc.cloud</a>. It serves as a bridge between your laboratory and a centralized data storage hub. With the Power Tower and your free HPLC.cloud subscription, you can access your equipment and experiment results from anywhere, on any device, at any time, using any interface!
<h4>Specifications</h4>
<ul>
<li>Voltage Range: 80 ~ 264VAC</li>
<li>Rated Power: 140W</li>
<li>Dimensions (WHL) - 61 x 115 x 255 mm / 2.4 x 4.53 x 10.04 in</li>
<li>Weight: 1.05 kg / 2.3 lb</li>
<li>Sampling Rate: 20 Samples per second</li>
<li>Resolution: -1 to 2.5V that corresponds to -1000 to 2500mAU</li>
<li>Noise Level: Less than 0.05mAU</li>
<li>Sync Time: Chromatogram is synced with HPLC Cloud every second</li>
<li>Operating Temperature: 0 to 40° C, non-condensing</li>
</ul>
<h4>Ports</h4>
<ul>
<li>4 USB-A</li>
<li>4 Power outputs 24V, 2A</li>
<li>1 CAT5 ethernet connector</li>
<li>1 Galvanic isolated analog input -1V to +2.5V</li>
</ul>
<h4>Key Functionality</h4>
Start &amp; stop injections; analyze chromatograms; control the detector, valve, autosampler, and pump via HPLC.cloud
<ul>
<li>Real-time chromatogram streaming</li>
<li>Connect up to 4 Alltesta™ units via 4 USB ports</li>
<li>Build and record sequences</li>
<li>Create and store methods</li>
<li>Keep your sample information and analysis results in the cloud, never lose your data</li>
<li>Build calibrations from standards, then analyze and quantitate samples</li>
<li>Start, stop, and edit your analysis remotely from anywhere in the world</li>
<li>Access your data via PC, tablet, or mobile phone</li>
<li>Search your results online</li>
</ul>

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>

ECOM L3320 HPLC Autosampler

An automatic autosampler with excellent accuracy and linearity of sample injection. Innovated needle design reduces sample contamination and µl pick-up mode achieves zero sample loss.

Autosampler L3320 is an automatic autosampler with excellent accuracy and linearity of sample injection. Innovated needle design significantly reduces sample residue contamination. µl pick-up mode achieves zero sample loss.The autosampler is designed as a&nbsp;standalone unit.The user-friendly unit features computer control and shows information about the actual status on the unit display. Automated self-checking simplifies the usage of the autosampler, there is no need for calibration or needle position setting.Rheodyne valve secures the reliable operation of the device.The unit is supported by the <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/999">Clarity&nbsp;software</a>.<h4>Parameters</h4><ul><li>Communication: RS232,USB</li><li>Syringe volume: Standard 250μl; 100μl optional</li><li>Reproducibility: Full loop injection: RSD≤0.3%, Partial loopfill injection: RSD≤0.5%, μl pickup injection: RSD≤1%</li><li>Control:&nbsp;PC (Clarity SW)</li><li>Loop volumes: Standard 100μl; 10μl, 20μl and 50μl optional</li><li>Injection Volume: Full loop injection = loop volume, Partial loop injection = ½ of loop volume, μl pickup injection = (loop volume – 3 x needle volume)/2</li><li>Sample Capacity: 2 standard 48-vial tray (1.5ml vials)</li><li>Pressure limit: 6000 PSI</li><li>Cross Contamination: &lt; 0.02% after programmed needle wash</li><li>Weight: 17kg</li><li>Dimensions W x H x D: 453 x 359 x 244 mm (17.8 x 14.1 x 9.6”)</li><li>Linearity: 0.9999</li><li>Power supply: 100-240VAC, 50-60Hz, 110W&nbsp;</li></ul>

ARC Solvere Universal HPLC Detector

The Solvere™ is a new LC detector that brings the benefits of the Flame Ionization Detector (FID) to LC. 
Using ARC’s expertise in catalysis and reactor design, a novel method was developed for removing volatile compounds, which allows for the use of both aqueous and organic solvents with the detector. 
Non-volatile components in the sample stream are transformed into the gas phase, converted to methane, and then detected by the FID with a linear range of five orders of magnitude.
ARC Solvere is designed for quantitation of compounds where GC ends with a range up to large 1M+ Da molecules. In addition, Solvere works with a myriad of mobile phases, additives, and gradients, with unprecedented linear range, uniformity and robustness.
<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/ARC_Koncept_detekce_pomoci_HPLC_FID_detektoru_Solvere_1090d61827/ARC-Koncept-detekce-pomoci-HPLC-FID-detektoru-Solvere.jpg" alt="ARC: The concept of HPLC - FID detector Solvere"/>
<h3>Why is it important?</h3>
<ul>
<li>Mobile phases are effectively separated from non-volatile analytes</li>
<li>Analytes are converted into methane for universal FID detection</li>
<li>Compatible with gradients and organic solvents</li>
<li>A variety of molecules such as proteins, peptides, and sugars give a universal carbon response</li>
</ul>
<blockquote>
FOR USE WITH ANY LC MODEL
</blockquote>
<h3>Benefits of the Solvere</h3>
<ul>
<li>Analyte response independent of mobile phase composition</li>
<li>Conversion of analytes to methane for universal FID response</li>
<li>5 orders of magnitude range</li>
<li>~10 ppm LOD</li>
<li>Standalone and automated</li>
</ul>
<h3>Solvere - Universal FID for HPLC</h3>
<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/ARC_Ukazka_detekce_Sacharozy_pomoci_Solvere_detektoru_pro_HPLC_21106ae2ae/ARC-Ukazka-detekce-Sacharozy-pomoci-Solvere-detektoru-pro-HPLC.jpg" alt="ARC: Example of Sacharose Analysis Using Solvere Detector for HPLC"/>

Products from category HPLC components focused on HPLC - page 5

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