We are pleased to invite you to our upcoming free online webinar on June 11, 2026 focused on one of the most pressing challenges in environmental monitoring and water quality management — PFAS (Per- and Polyfluoroalkyl Substances).As regulatory frameworks continue to evolve and compliance deadlines approach, laboratories, water utilities, and environmental professionals need robust, reliable, and cutting-edge analytical solutions to stay ahead.<blockquote>👉<a target="_blank" rel="noopener noreferrer" href="https://events.teams.microsoft.com/event/91d97003-fe33-4dca-b80b-160d9f8a5655@485ca04e-6f74-4050-9764-cdb4bfa89c25">Registration HERE</a></blockquote><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/ALS_analyzy_PFAS_a9e4a87fbc.jpg" alt="ALS: Advanced PFAS Analytical Services " srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_ALS_analyzy_PFAS_a9e4a87fbc.jpg 245w," sizes="100vw" width="600" height="336"><h4>🎤 Our Speaker</h4>The webinar will be hosted by Jana Kováčová, Ph.D., PFAS Regional Lead for Continental Europe Environmental Division, who has dedicated the last several years to the field of PFAS analysis and determination in ALS laboratories. Jana is a recognized expert in PFAS environmental analytics and will share practical insights and the latest developments in analytical strategies to help your organization achieve and maintain compliance.<h4>🎯 What You Will Learn</h4><ul><li>Latest regulatory developments and compliance requirements for PFAS in water, including EU Drinking Water Directive 2020/2184 and its implications for water suppliers and laboratories.</li><li>Regulatory updates for surface water and groundwater — what's new and what to expect next.</li><li>Overview of advanced analytical strategies for PFAS detection and quantification in water matrices and how we analyse PFAS samples.</li><li>Key analytical challenges associated with PFAS testing — from ultra-trace detection to matrix interferences and contamination control.</li><li>The critical importance of using tested sampling containers and sample preservation to ensure reliable results.</li><li>Illustrative examples of results from real-world PFAS water analyses.</li><li>How ALS can support your needs with accredited PFAS testing services.</li></ul><h4>👥 Who Should Attend</h4>This webinar is designed for our clients, professionals, laboratory and technical staff, scientists, as well as anyone with an interest in analytical chemistry who wants to better understand the occurrence of these "forever chemicals" in the environment. &nbsp;<h4>💬 Q&amp;A Session</h4>There will be a live Q&amp;A session at the end of the webinar. You are welcome to submit your questions in advance during registration or ask them live on the day.<h4>📅 Additional Webinar Info:</h4><ul><li>Platform: Microsoft Teams (online)</li><li>Time: 10:00 CEST</li><li>Language: English</li><li>Duration: approx. 45 - 60 minutes (incl. Q&amp;A) Extras: If you are unable to attend on the day, please register and we will provide you with the recording of the webinar.</li></ul><h4>🔬 About ALS Environmental</h4>ALS is a global leader in environmental testing and analytical services, providing accredited PFAS analysis to clients across Europe and beyond. Our dedicated PFAS experts help clients navigate the complex regulatory landscape with confidence.<blockquote>For further information, please contact us on: marketing.cz@alsglobal.com</blockquote>We look forward to welcoming you to this important discussion on PFAS compliance in water.

Invitation to the ALS Webinar PFAS in Water 2026: Achieving Compliance through Advanced Analytical Strategies

In HPLC and other chromatographic techniques, the quality of your analytical results depends heavily on the condition of the sample before it ever reaches the instrument. While vial caps may appear to be a small accessory, they play a critical role in maintaining sample integrity, preventing contamination, and minimizing evaporation.Whether you use crimp, screw, or snap caps, each closure type offers distinct advantages and limitations. Selecting the right option can improve sample protection, simplify laboratory operations, and help ensure consistent analytical performance. Let's take a closer look at the characteristics of each cap style and explore when each one is most appropriate.<h3>Sealing Performance: Protecting Your Sample</h3>The primary purpose of any vial cap is to create a reliable seal. However, different cap designs achieve this in different ways, resulting in varying levels of protection against evaporation, contamination, and sample degradation.<h5>Crimp Caps</h5>Crimp caps provide the highest level of sealing performance. A metal cap is mechanically crimped around the vial neck, creating a secure and highly airtight closure. This design minimizes sample loss and offers excellent protection during long-term storage.<ul><li>Ideal applications: When volatile compounds must be preserved, or when even minor contamination and evaporation cannot be tolerated, such as headspace analysis and highly sensitive analytical methods.</li></ul><h5>Screw Caps</h5>Screw caps are widely used because they combine practicality with dependable sealing. Their threaded design allows them to be tightened easily while still providing sufficient protection for the majority of HPLC applications.One of their biggest advantages is the ability to open and reseal the vial multiple times without requiring additional equipment.<ul><li>Ideal applications: Routine laboratory analyses, methods requiring repeated sample access, and workflows where convenience is important.</li></ul><h5>Snap Caps</h5>Snap caps emphasize speed and ease of use. They are pressed onto the vial until they lock into position with a simple click.Although they do not provide the same degree of airtight sealing as crimp or screw caps, they offer a fast and straightforward solution for many applications.<ul><li>Ideal applications: Short-term sample storage, stable analytes, and high-throughput environments where rapid handling is a priority.</li></ul><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/KNAUER_Crimp_vs_Screw_Caps_04bdfdd4a5.jpg" alt="KNAUER: Crimp and Screw Caps" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_KNAUER_Crimp_vs_Screw_Caps_04bdfdd4a5.jpg 245w," sizes="100vw" width="1152" height="389"><h3>Ease of Use: Supporting Laboratory Efficiency</h3>In busy analytical laboratories, workflow efficiency matters. The choice of vial closure can significantly affect the amount of time spent preparing samples.<h5>Crimp Caps</h5><ul><li>Advantages: Crimp caps deliver highly reproducible sealing when applied correctly. Automated crimping devices can further improve consistency while reducing operator-to-operator variability.</li><li>Limitations: A crimping tool is required for installation. Manual crimping can be labor-intensive and may produce inconsistent results if the technique is not properly controlled. In addition, removing a crimp cap typically damages it, requiring replacement before the vial can be resealed.</li></ul><h5>Screw Caps</h5><ul><li>Advantages: Screw caps are exceptionally user-friendly. They can be installed and removed without any specialized tools, making them convenient for workflows involving repeated sample access.</li><li>Limitations: Seal quality depends on proper tightening. Excessive torque can damage the cap or septum, while insufficient tightening may compromise the seal. Repeated opening and closing can also gradually wear the cap components.</li></ul><h5>Snap Caps</h5><ul><li>Advantages: Snap caps offer the fastest sealing process. Simply pressing the cap into position is sufficient, making them attractive for laboratories processing large numbers of samples.</li><li>Limitations: Their convenience comes at the expense of sealing performance. They provide less protection against contamination and solvent loss, particularly when handling volatile compounds.</li></ul><h3>Instrument Compatibility: Matching Caps to Your Workflow</h3>Selecting a vial cap is not only about sealing efficiency. Compatibility with vials, autosamplers, and laboratory procedures is equally important.<h5>Crimp Caps</h5><ul><li>Compatibility: Crimp caps are designed specifically for crimp-top vials and are commonly used in automated analytical systems. They work particularly well with glass vials and provide highly reliable sealing performance.</li><li>Limitations: The need for a crimping device introduces an additional workflow step. Furthermore, improper crimping—whether too loose or too tight—can result in inconsistent sealing and potential sample integrity issues.</li></ul><h5>Screw Caps</h5><ul><li>Compatibility: Screw caps are among the most versatile closure options available. They are compatible with many autosamplers and can be used with both glass and plastic vials.</li><li>Limitations: Although suitable for most routine analyses, they may not provide the level of sealing required for extremely volatile compounds or demanding headspace applications.</li></ul><h5>Snap Caps</h5><ul><li>Compatibility: Snap caps are intended for use with snap-ring vials. Many autosamplers that accommodate crimp or screw-top vials can also accept snap-ring formats, offering flexibility in certain laboratory environments.</li><li>Limitations: Their relatively loose seal makes them less suitable for long-term storage or volatile analytes. Before implementation, laboratories should verify autosampler compatibility with snap-ring vial formats.</li></ul><h3>How to Choose the Right Cap Type</h3>The best closure depends on the specific requirements of your application.<h4>Choose Crimp Caps When:</h4><ul><li>Your samples contain highly volatile compounds.</li><li>Long-term storage is required.</li><li>Maximum sealing performance is essential.</li><li>You are performing headspace GC or highly sensitive LC-MS/MS analyses.</li></ul><h4>Choose Screw Caps When:</h4><ul><li>Samples need to be accessed repeatedly.</li><li>Convenience and flexibility are important.</li><li>Compatibility across multiple instruments and workflows is required.</li><li>Standard HPLC applications are being performed.</li></ul><h4>Choose Snap Caps When:</h4><ul><li>Samples are relatively stable and non-volatile.</li><li>Fast sample preparation is critical.</li><li>High-throughput operations demand rapid vial handling.</li><li>Short-term storage is sufficient.</li></ul><h3>Final Thoughts</h3>Although vial caps are often overlooked, they can have a significant impact on both sample quality and laboratory productivity.To summarize:<ul><li>Crimp Caps: Provide the most secure and airtight seal, making them ideal for volatile compounds, sensitive analyses, and long-term storage.</li><li>Screw Caps: Offer an excellent balance between sealing performance and convenience, making them the preferred choice for many routine chromatographic applications.</li><li>Snap Caps: Deliver maximum speed and simplicity, making them well suited for stable samples and fast-paced laboratory workflows.</li></ul>By understanding the strengths and limitations of each cap type, laboratories can select the most appropriate closure for their analytical requirements, ensuring sample integrity while maintaining an efficient workflow.<blockquote>If you want to protect your samples and improve your HPLC’s performance, check out our brand-new <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/2381">KNAUER originals HPLC Vials</a></blockquote>

Crimp vs. Screw Caps: Which is Better for Chromatography?

News from LabRulezLCMS Library - Week 24, 2026

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Webinars

Application

Video

Poster

Water

For more than 40 years, ALS has provided testing and technical solutions to clients all over the world in a wide range of industries. We have built our global reputation by embracing the latest technologies and innovative methodologies to deliver high quality testing services to clients. ALS is able to leverage a multifaceted international team while remaining agile enough to provide local expertise and personalized solutions to every one of our clients.

ALS Czech Republic

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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 Streamline™ P1 HPLC Pump, Stainless Steel

The Watrex Streamline™ P1 pump is a versatile and powerful dual-piston HPLC pump.

Streamline P1 pump, stainless steel fully meets the demanding requirements for HPLC pumps and can be combined seamlessly with HPLC detectors and instruments from other manufacturers.<blockquote>Price 4 935 € ex VAT</blockquote>In the analytical version of the pump, the flow rate range from 0.001 ml/min to 10 ml/min is adjustable in 1 ul increments with a maximum working pressure of 42 MPa (6,000 psi). Flow rate adjustment accuracy is ±1% and flow rate variation is better than ±0.1%. The pump’s extremely smooth flow profile is ensured by an efficient pulse damper and optimized cam shape.A unique feature is the active piston and seal rinse, which prevents crystallization of buffers. A touch screen display on the front panel allows intuitive control of the pump.The display shows the flow rate, the current pressure and the pump is equipped with pressure limits. A PRIME function is also directly available for flushing at increased flow rates.<figure class="image"><img style="aspect-ratio:611/408;" src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Watrex_Streamline_P1_Pump_Stainless_Steel_23a7bf9f11.jpg" alt="Watrex: Streamline™ P1 Pump, Stainless Steel." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Watrex_Streamline_P1_Pump_Stainless_Steel_23a7bf9f11.jpg 234w," sizes="100vw" width="611" height="408"></figure><h3>TECHNICAL SPECIFICATION</h3><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>You can also visit this product on the <a target="_blank" rel="noopener noreferrer" href="https://watrex.com/obchod/chromatography/pumps/isocratic-pumps/streamline-p1-pump-stainless-steel/?utm_source=labrulez&amp;utm_medium=propagace&amp;utm_campaign=labrulez_produkty">Watrex website</a>.

Watrex Streamline™ UV1 HPLC detector, Stainless Steel

The Streamline™ UV1 HPLC detector offers an excellent signal-to-noise ratio, making it ideal for demanding applications.

Watrex Streamline™ UV1 programmable UV/VIS detector exhibits excellent signal-to-noise ratio for even the most demanding applications. It is equipped with standard analytical cell. It has a 2-lamp source (deuterium + tungsten), variable wavelength detector configuration suitable for operation between 190 and 800 nm.<blockquote>Price 4 788 € ex VAT</blockquote><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Watrex_Watrex_Streamline_UV_1_UV_VIS_detector_686c6c9937.jpg" alt="Watrex: Streamline™ UV1 detector, Stainless Steel" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Watrex_Watrex_Streamline_UV_1_UV_VIS_detector_686c6c9937.jpg 245w," sizes="100vw" width="945" height="436"><h3>TECHNICAL SPECIFICATION</h3><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: better 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>You can also visit this product on the <a target="_blank" rel="noopener noreferrer" href="https://watrex.com/obchod/chromatography/detectors/uv-vis-detectors/streamline-uv1-detector/?utm_source=labrulez&amp;utm_medium=propagace&amp;utm_campaign=labrulez_produkty">Watrex website</a>.

Watrex Streamline™ PDA1 HPLC Detector, Stainless Steel

Photo-diode-array (PDA) HPLC detector with the optimum wavelength can be selected for each analyzed substance.

Watrex Streamline™ PDA1 is a photo-diode-array (PDA) detector for routine analysis and sophisticated research.<blockquote>Price 9 972 € ex VAT</blockquote>The dual lamp design offers a wavelength range of 190 – 720 nm (256 Diodes) with a low baseline noise.The front-accessible flow cell can easily bHPLCe exchanged, as can be the lamps which are accessible through a side panel in the instrument housing.Streamline™ PDA1 features 4-Wavelength channels to measure chromatograms at 4 different wavelengths at the same time. With this feature the optimum wavelength can be selected for each analyzed substance.<figure class="image"><img style="aspect-ratio:945/435;" src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Watrex_Watrex_Streamline_PDA_1_Photodiode_array_detector_3784ec588b.jpg" alt="Watrex: Streamline™ PDA1 Detector, Stainless Steel" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Watrex_Watrex_Streamline_PDA_1_Photodiode_array_detector_3784ec588b.jpg 245w," sizes="100vw" width="945" height="435"></figure><h3>TECHNICAL SPECIFICATION</h3><ul><li>Wetted Materials: Stainless Steel/ PEEK*, teflon, Glass (*depending on configuration)</li><li>Light Source: Deuterium Lamp, Tungsten Lamp</li><li>Wavelength Range: 190 – 720 nm</li><li>Number of Diodes: 256</li><li>Baseline Noise: ± 1 x 10-5 AU (@240 nm, 1 sec. risetime)</li><li>Baseline Drift: better than 3 x 10-4 AU/h</li><li>Wavelength Accuracy: 0.5 nm</li><li>Mean Pixel Pitch: 2.2 nm</li><li>Resolution: 7 nm</li><li>Linearity: higher than 2.0 AU</li><li>Data Rate: 1 Hz – 100 Hz</li></ul>You can also visit this product on the <a target="_blank" rel="noopener noreferrer" href="https://watrex.com/obchod/chromatography/detectors/uv-vis-detectors/streamline-pda1-detector-256-diodes/?utm_source=labrulez&amp;utm_medium=propagace&amp;utm_campaign=labrulez_produkty">Watrex website</a>.

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>.

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>

Products from category HPLC components - page 7

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