Derivatizing amino acids doesn’t have to take hours to do. A more hands-off solution can save your lab hours of prep work. And help you trust your data even more.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Thermo_Fisher_Scientific_How_to_Cut_HPLC_Sample_Preparation_Time_for_Derivatizing_Amino_Acids_f41f58db04.jpeg" alt="Thermo Fisher Scientific: How to Cut HPLC Sample Preparation Time for Derivatizing Amino Acids." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Thermo_Fisher_Scientific_How_to_Cut_HPLC_Sample_Preparation_Time_for_Derivatizing_Amino_Acids_f41f58db04.jpeg 245w," sizes="100vw" width="1024" height="512">Ever wonder what makes a simple molecule like valine so complicated to measure?Amino acids—the building blocks of proteins—are everywhere. In your food. Body. And even the fertilizers that help grow our food. But measuring these compounds precisely? That’s a classic analytical headache, even for an experienced chromatographer.Ask any lab scientist who’s done amino acid analysis, and they’ll tell you the chromatographic separation isn’t the hard part. The challenge is sample preparation, or everything before the chromatography. Handling toxic reagents. The repeated pipetting. And then timing the derivatization reactions just right.All these manual steps can contribute to lower method precision and data reproducibility.So, what’s the solution? Using a more hands-off approach. You get the same trusted chemical reaction, but your method is now faster, cleaner, and more reliable.Let’s walk through a real-life example of how your lab can derivatize amino acids directly inside the HPLC autosampler needle.<h3>Key takeaways</h3><div><ul><li>Manual derivatization of amino acids is laborious, error-prone, and handling toxic chemicals can pose health hazards to lab staff.</li><li>Automated in-needle OPA/FMOC derivatization of amino acids is a time- and labor-saving approach for HPLC-FLD analysis.</li><li>Reliable method performance, column stability over several hundred injections, and using inexpensive reagents facilitates high sample throughput at low costs per sample for routine laboratories.</li><li>Sample matrices of medium and high complexity (beverages, food, fertilizers) using in-needle derivatization is robust and reproducible.</li></ul><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Thermo_Fisher_Scientific_How_to_Cut_HPLC_Sample_Preparation_Time_for_Derivatizing_Amino_Acids_2_a906250f79.jpeg" alt="Thermo Fisher Scientific: How to Cut HPLC Sample Preparation Time for Derivatizing Amino Acids: Illustration showing manual derivatization versus in-needle derivatization." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Thermo_Fisher_Scientific_How_to_Cut_HPLC_Sample_Preparation_Time_for_Derivatizing_Amino_Acids_2_a906250f79.jpeg 245w," sizes="100vw" width="700" height="410"><h3>Why does the derivatisation of amino acids still matter when aerosol detectors are an option? The unmatched sensitivity of fluorescence detection compared to evaporative technology.</h3>Most amino acids don’t have double bonds that naturally absorb UV light, meaning your HPLC detector can’t “see” the compounds directly.To solve these visibility issues, chemists use derivatization. The conjugation reaction is brilliant chemistry, facilitating the formation of <a target="_blank" rel="noopener noreferrer" href="https://www.thermofisher.com/content/lifetech/global/en/home/industrial/chromatography/chromatography-learning-center/liquid-chromatography-information/hplc-system-components/how-hplc-detectors-work.html">fluorescent derivatives</a> suitable for sensitive and precise analysis.This technique involves reacting amino acids in the solution for analysis with reagents that make the amino acids fluorescent. The most common pair are OPA (ortho-phthaldialdehyde) for primary amino acids and FMOC-Cl (9-fluorenylmethyloxycarbonyl chloride) for secondary ones.Now here’s what can go wrong. You measure reagents, mix samples by hand, wait for the reaction, then inject onto your HPLC instrument. Small inconsistencies, such as a few seconds too long or a reagent variation, can mean BIG differences in peak response, method accuracy, and data reproducibility. Removing these inconsistencies is where automated in-needle derivatization comes in.<h3>Let your HPLC autosampler needle handle the not-so-friendly laborious tasks</h3>Switching from manual to automated in-needle derivatization can help make this labor-intensive process easier for everyone in your lab, while improving data consistency and overall lab safety. &nbsp;Here’s how:<div><div><ul><li>Instead of manually preparing reaction mixtures, you can use a compatible instrument, like<a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products?category=37&amp;manufacturerItems=3&amp;search=vanquish"> Thermo Scientific Vanquish LC Systems</a>, to perform in-needle derivatization.</li><li>And, with the helpful guidance of supporting software, you can automatically mix samples and reagents in the needle, time the reaction more precisely, and inject the derivatized sample onto the column.</li></ul><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Thermo_Fisher_Scientific_How_to_Cut_HPLC_Sample_Preparation_Time_for_Derivatizing_Amino_Acids_3_5c636b1584.jpeg" alt="Thermo Fisher Scientific: How to Cut HPLC Sample Preparation Time for Derivatizing Amino Acids: In-needle derivatization of primary and secondary AAs with OPA/MPA and FMOC-Cl reagents for subsequent LC analysis of the fluorescent derivatives. *Borate buffer pH 10, **acetic acid for quenching." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Thermo_Fisher_Scientific_How_to_Cut_HPLC_Sample_Preparation_Time_for_Derivatizing_Amino_Acids_3_5c636b1584.jpeg 245w," sizes="100vw" width="768" height="384"><h3>A real-life example showcasing better efficiency, robustness, and throughput capabilities.</h3>What makes this automated workflow stand out isn’t a new reaction—but rather a faster way of working with your HPLC instrument.The reactions between OPA/MPA and FMOC-Cl still happen as before, but now the reaction is controlled digitally through <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/labrulez-bucket-strapi-h3hsga3/cn_003698_hplc_vanquish_workflow_amino_acid_analysis_derivatization_cn003698_na_en_e76e3abe44.pdf">Thermo Scientific Chromeleon Chromatography Data System</a> (CDS).As demonstrated in our whitepaper, each reagent draw, mix, and injection step is defined in a Custom Injection Program (CIP), eliminating timing errors and variability. <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/76">Chromeleon CDS</a> visualizes every step in its Instrument Method Editor, tracks parameters in real time, and logs events in the Audit Trail for compliance.And since the workflow design has flexibility in mind, you can use Chromeleon CDS or a <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/labrulez-bucket-strapi-h3hsga3/ab_004093_hplc_vanquish_core_amino_acids_needle_derivatization_ab004093_na_en_edb37df857.pdf">third-party software</a>, with identical parameters, which gives your labs the freedom to work within your preferred environment without retraining staff or rewriting SOPs.<h3>Trusting your data and a faster derivatization technique. That’s the science behind putting your sample preparation inside the needle.</h3>The most beneficial part of this workflow is the hours of time your lab and broader QC team will save.<ul><li>Consistent fluorescence response and accurate quantitation for all amino acids</li><li>Excellent injection-to-injection reproducibility, even across reagent batches</li><li>Improved safety through reduced manual solvent handling</li><li>Less hands-on time, freeing analysts for higher-value work</li><li>Seamless CDS integration for full audit traceability</li></ul>So next time you’re pipetting derivatization reagents by hand, secretly wishing there was a better way, why not consider an automated method approach?You get the same chemistry, performed automatically inside the autosampler, hands-free, ready to inject in minutes with reproducible data that you can trust.Learn more about this new automated amino acid analytical workflow in our <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/labrulez-bucket-strapi-h3hsga3/cn_003698_hplc_vanquish_workflow_amino_acid_analysis_derivatization_cn003698_na_en_e76e3abe44.pdf">customer application note today</a>.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Thermo_Fisher_Scientific_How_to_Cut_HPLC_Sample_Preparation_Time_for_Derivatizing_Amino_Acids_4_341aed0b3a.jpeg" alt="Thermo Fisher Scientific: How to Cut HPLC Sample Preparation Time for Derivatizing Amino Acids: Chromatographic results of calibration standard (50 µM) measured with the Vanquish Core HPLC system, comparing method performance on 1st and 14th day of measurements." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Thermo_Fisher_Scientific_How_to_Cut_HPLC_Sample_Preparation_Time_for_Derivatizing_Amino_Acids_4_341aed0b3a.jpeg 245w," sizes="100vw" width="768" height="384"><h3>Helpful tips to improve method robustness with Vanquish LC Systems+ Chromeleon CDS</h3><ol><li>Use a 100 µL sample loop for thorough and reproducible mixing of the sample and reagents during the derivatization step.</li><li>Install a passive pre-heater to facilitate proper dilution of the reagents before the column.</li><li>Use guard cartridges for your columns and replace the cartridges when column performance diminishes. Apply smart tools like intelligent run control in Chromeleon CDS for automated checks.</li><li>Replace derivatization reagents in your autosampler daily.</li><li>Periodically flush your column with 100% acetonitrile for 30 minutes to remove persistent reaction products and matrices.</li></ol><blockquote>Visit us on&nbsp;<a target="_blank" rel="noopener noreferrer" href="https://www.linkedin.com/showcase/72003132/admin/dashboard/">LinkedIn:</a>&nbsp;#AutomatedSamplePreparation #HPLC</blockquote></div></div></div>

How to Cut HPLC Sample Preparation Time for Derivatizing Amino Acids

<h3>How long does it actually take to install all the capillaries and fittings on a conventional HPLC system?</h3><h4>The Small Components That Matter Most</h4>When people think about HPLC systems, they often focus on pumps, detectors, columns, or software. Capillaries and fittings are usually seen as minor components because they are relatively inexpensive and physically small. However, every chromatographer eventually discovers that these tiny parts can have a major influence on system performance.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/KNAUER_Connecting_a_U_HPLC_system_can_be_difficult_at_some_poorly_accessible_locations_3b837b441b.webp" alt="KNAUER: Connecting a (U)HPLC system can be difficult at some poorly accessible locations" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_KNAUER_Connecting_a_U_HPLC_system_can_be_difficult_at_some_poorly_accessible_locations_3b837b441b.webp 208w," sizes="100vw" width="720" height="540">Even decades ago, chromatographers recognized the importance of proper connections. In the 1980s, long before UHPLC became common, John Dolan wrote about minimizing dead volume through correct fitting installation. Today, with UHPLC systems operating at extremely high pressures and using columns with very small particle sizes, dead volume is even less tolerable than before. The topic remains just as relevant today as it was back then.Interestingly, despite what many users assume, the chromatographic column itself is often not the primary source of HPLC or UHPLC problems. In my experience, poor connections are far more commonly responsible for issues such as peak broadening, leaks, or loss of efficiency.<h4>The Early Days of HPLC Capillaries</h4>Anyone who has been working with HPLC for many years will probably remember the era of rigid 1/16" stainless steel tubing. Whenever PEEK tubing was unsuitable, stainless steel capillaries were the standard choice.Setting up a system back then was far from convenient. You first had to locate an appropriate length of tubing somewhere in a drawer full of capillaries. Usually, this meant finding a several-meter-long piece and cutting it yourself using a dedicated capillary cutter. After cutting, you needed to ensure the tubing end was smooth and undamaged, hoping that the previous person using the cutter had not accidentally crushed the inner diameter.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/KNAUER_Standard_1_16_Capillary_and_needed_tools_and_the_drawer_we_all_know_pretty_well_943d7ed0b2.jpg" alt="KNAUER: Standard 1/16” Capillary and needed tools and the drawer we all know pretty well" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_KNAUER_Standard_1_16_Capillary_and_needed_tools_and_the_drawer_we_all_know_pretty_well_943d7ed0b2.jpg 245w," sizes="100vw" width="1277" height="456">Once cut, the tubing often required additional preparation. You might need to deburr the capillary using a grater, shape it carefully with bending tools, and then finally install it using separate fittings and ferrules. And of course, everyone remembers the frustration of dropping a ferrule onto the laboratory floor, where it effectively disappeared forever.At the same time, laboratories often accumulated drawers filled with pre-assembled capillaries that had fixed fittings attached. Reusing these assemblies was risky. If the fitting geometry did not perfectly match the receiving port, users could unintentionally introduce dead volume into the system. The result was often degraded chromatographic performance, broad peaks, and frustrating troubleshooting sessions involving the entire laboratory team. In worse cases, excessive force could damage threads or receiving ports while attempting to stop leaks.During that period, assembling and connecting a complete HPLC system could easily consume half a day of work.<h4>The Improvement: Flexible and Pre-Cut Capillaries</h4>Later, laboratories gradually adopted pre-cut tubing and flexible capillaries, which represented a significant improvement over manually preparing stainless steel tubing.With these newer capillaries, users simply selected the correct length and installed the tubing directly. Flexible capillaries adapted naturally to the required shape, eliminating much of the manual bending and shaping work. Installation became faster, easier, and far less stressful.Still, these systems had limitations. Although the capillary itself improved, the fitting technology remained largely unchanged. Many of these capillaries were still effectively single-use components. If a connection was installed incorrectly because the tubing was not fully inserted into the receiving port before tightening, the result was often another unusable capillary destined for the growing “capillary drawer.” Sustainability was certainly not a strong point of these systems.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/KNAUER_A_typical_capillary_drawer_It_was_tricky_to_open_and_close_it_sometimes_530dd2087c.webp" alt="KNAUER: A typical capillary drawer. It was tricky to open and close it sometimes" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_KNAUER_A_typical_capillary_drawer_It_was_tricky_to_open_and_close_it_sometimes_530dd2087c.webp 208w," sizes="100vw" width="1024" height="768">Even with these advancements, system setup still required considerable time and effort.<h4>The Real Breakthrough: Modern Tool-Free Connection Systems</h4>A major breakthrough finally arrived when manufacturers introduced a completely redesigned fitting and capillary concept aimed specifically at simplifying UHPLC connections.These newer systems came with fittings pre-installed directly on the capillary. Unlike traditional ferrule-based systems, the fittings automatically adjusted to different port depths and sealed directly at the bottom of the port. This dramatically reduced the amount of torque required and eliminated the need for complicated installation techniques.Perhaps the biggest advantage was convenience. These capillaries could be connected and disconnected more than 100 times without tools, while remaining entirely finger-tight. And best of all, ferrules no longer disappeared onto the laboratory floor.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/KNAUER_The_little_things_that_do_the_click_3a0469d516.jpg" alt="KNAUER: The little things that do the “click”" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_KNAUER_The_little_things_that_do_the_click_3a0469d516.jpg 245w," sizes="100vw" width="1866" height="1022">The system I currently use includes an especially useful feature: a patented torque-limiting mechanism that prevents both under-tightening and over-tightening. Once the correct torque is reached, the fitting produces a tactile “click,” providing immediate feedback that the connection is secure and properly installed every time.<h4>From Half a Day to Fifteen Minutes</h4>Thanks to these modern connection systems and pre-configured startup kits, installing an HPLC or UHPLC system today is dramatically faster than it used to be.What once consumed hours of work can now be completed in less than 15 minutes. The improvements in usability, reproducibility, and sustainability over recent years have been remarkable.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/KNAUER_Trouble_free_connection_systom_for_HPLC_and_UHPLC_e62b80154b.webp" alt="KNAUER: Trouble-free connection systom for HPLC and UHPLC" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_KNAUER_Trouble_free_connection_systom_for_HPLC_and_UHPLC_e62b80154b.webp 221w," sizes="100vw" width="690" height="487"><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/KNAUER_Trouble_free_connection_systom_for_HPLC_and_UHPLC_2_71c24acdf5.webp" alt="KNAUER: Trouble-free connection systom for HPLC and UHPLC" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_KNAUER_Trouble_free_connection_systom_for_HPLC_and_UHPLC_2_71c24acdf5.webp 224w," sizes="100vw" width="1920" height="1339">And while today’s solutions already represent a huge leap forward, the evolution of HPLC connection technology is certainly not over yet. Looking ahead, it will be exciting to see how future innovations continue to simplify chromatography workflows even further.<blockquote>If you want to learn more about KNAUER´s capillaries, fittings and (U)HPLC system start-up kits and are interested in details and numbers, I highly recommend our brand <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/labrulez-bucket-strapi-h3hsga3/r75ev6rjivdbid246k60zrs3gjpvwdi5b8em_fad0f92fd9.pdf">new tech note "Benefits of KNAUER´s trouble-free analytical capillaries in terms of HPLC and UHPLC system performance</a>" and a visit to our <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/2402">products online</a>.</blockquote>

Let´s Connect a whole (U)HPLC system without tools and trouble

News from LabRulezLCMS Library - Week 21, 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.

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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

KNAUER High Precision AZURA P 6.1L HPLC Pump

KNAUER AZURA P 6.1L HPLC pump with up to 1000 bar, precise gradient control, and low pulsation for reliable UHPLC workflows.

The KNAUER AZURA P 6.1L is a high-precision analytical HPLC pump designed for accurate and reproducible solvent delivery in both HPLC and UHPLC applications.The pump combines essential features of a modern pumping system, including low pulsation, high pressure capability, precise gradient formation, and flexible configuration. It is available in both HPG (high-pressure gradient) and LPG (low-pressure gradient) versions, with a flow range up to 50 mL/min.The system uses a dual serial piston mechanism with active pulsation compensation, ensuring excellent flow stability under all conditions. A low-dead-volume microfluidic mixer enables efficient and precise solvent mixing.Different pump heads are available:<ul><li>up to 10 mL/min at 862 bar</li><li>up to 5 mL/min at 1000 bar</li></ul>Optional configurations include biocompatible materials (PEEK, ceramic, titanium) and specialized setups for normal phase applications (e.g., hexane, heptane).<h4>Key Features</h4><ul><li>High-precision analytical HPLC/UHPLC pump</li><li>Pressure up to 1000 bar</li><li>Flow rates up to 50 mL/min</li><li>Dual piston system with low pulsation</li><li>Active pulsation compensation</li><li>HPG and LPG gradient configurations</li><li>Microfluidic mixer (50–600 µl)</li><li>RFID pump head detection</li><li>Optional degasser</li><li>Biocompatible configurations available</li><li>Robust operation with demanding solvents</li></ul><h3>Technical Specifications</h3><h4>Solvent Delivery</h4><ul><li>Pump type: analytical HPLC pump</li><li>Mechanism: dual serial piston</li><li>Flow range: 0.001 – 50 mL/min</li><li>Max pressure: up to 1000 bar</li><li>Flow accuracy: ± 0.25%</li><li>Precision: ≤ 0.04% RSD</li></ul><h4>Gradient</h4><ul><li>Range: 0–100% (0.1% steps)</li><li>HPG accuracy: ± 0.3%</li><li>HPG precision: &lt; 0.1% RSD</li><li>LPG accuracy: ± 0.3% to ± 2%</li><li>LPG precision: &lt; 0.5% RSD</li></ul><h4>Mixing</h4><ul><li>Microfluidic mixer</li><li>Volumes: 50 / 100 / 200 / 400 / 600 µl</li><li>Low dead volume</li></ul><h4>Degasser (optional)</h4><ul><li>2–4 channels</li><li>Max flow: 10 mL/min per channel</li><li>Residual O₂: &lt; 0.5 ppm</li><li>Membrane: fluoropolymer</li></ul><h4>Materials</h4><ul><li>PEEK, Tefzel®, Systec AF</li><li>Optional biocompatible materials (titanium, ceramic)</li></ul><h4>Control &amp; Communication</h4><ul><li>LAN, analog inputs</li><li>Event outputs (TTL, relay)</li><li>Optional mobile control</li><li>RFID pump head detection</li></ul><h4>Operating Conditions</h4><ul><li>Temperature: 4–40 °C</li><li>Humidity: &lt; 90% non-condensing</li></ul><h4>Dimensions &amp; Power</h4><ul><li>Dimensions: 361 × 208 × 523 mm</li><li>Weight: 14.1 kg</li><li>Power supply: 100–240 V, 50–60 Hz</li><li>Power consumption: max 100 W</li></ul>

KNAUER High Precision AZURA P 8.1L UHPLC Pump

KNAUER AZURA P 8.1L UHPLC pump with up to 1240 bar, adaptive pulsation compensation, and high precision for demanding UHPLC applications.

The KNAUER AZURA P 8.1L is a high-performance UHPLC pump designed for ultra-fast and high-resolution chromatographic applications. With a maximum pressure of 1240 bar (124 MPa) and flow rates up to 5 mL/min, it meets the demands of modern UHPLC workflows.The pump features a dual serial piston mechanism combined with adaptive pulsation compensation, which operates independently of flow rate, pressure, and solvent type through real-time monitoring of eluent compressibility and variable piston stroke.Together with KNAUER’s advanced piston drive technology, this results in exceptional flow reproducibility under all operating conditions. High-precision in-house manufacturing ensures long piston seal lifetime and maximum system uptime.<h4>Key Features</h4><ul><li>UHPLC pump up to 1240 bar</li><li>Flow rates up to 5 mL/min</li><li>Dual serial piston system</li><li>Adaptive pulsation compensation</li><li>Excellent flow reproducibility</li><li>HPG gradient capability</li><li>Integrated 4-channel degasser</li><li>RFID pump head detection</li><li>Low baseline noise</li><li>High durability and long lifetime</li><li>Compatible with UHPLC and LC-MS systems</li></ul><h3>Technical Specifications</h3><h4>Solvent Delivery</h4><ul><li>Pump type: analytical UHPLC pump</li><li>Mechanism: dual serial piston</li><li>Max pressure: 1240 bar</li><li>Flow rate: up to 5 mL/min</li><li>Flow accuracy: ± 0.25%</li><li>Precision: ≤ 0.04% RSD</li></ul><h4>Gradient</h4><ul><li>Type: HPG (high-pressure gradient)</li><li>Range: 0–100% (0.1% steps)</li><li>Accuracy: ± 0.3%</li><li>Precision: &lt; 0.1% RSD</li></ul><h4>Degasser</h4><ul><li>Channels: 4</li><li>Max flow: 5 mL/min per channel</li><li>Residual O₂: &lt; 0.5 ppm</li><li>Technology: fluoropolymer membrane</li></ul><h4>Connections</h4><ul><li>Inlet: UNF 1/4-28 (1/8” tubing)</li><li>Outlet: UNF 10-32 (1/16” capillary)</li></ul><h4>Materials</h4><ul><li>PEEK, Tefzel®, Systec AF</li><li>Compatible with most solvents (except HCl and halogenated hydrocarbons)</li></ul><h4>Control &amp; Communication</h4><ul><li>LAN, analog inputs</li><li>Event outputs (TTL, relay)</li><li>Optional mobile control</li><li>RFID pump head detection</li></ul><h4>Safety &amp; Operating Conditions</h4><ul><li>Leak sensor</li><li>Soft start and programmable pressure limits</li><li>Temperature: 4–40 °C</li><li>Humidity: &lt; 90% non-condensing</li></ul><h4>Dimensions &amp; Power</h4><ul><li>Dimensions: 361 × 208 × 523 mm</li><li>Weight: 26.7 kg</li><li>Power supply: 100–240 V, 50–60 Hz</li><li>Power consumption: max 310 W</li></ul>

KNAUER AZURA Autosampler AS 6.1L

KNAUER AZURA AS 6.1L autosampler with up to 768 samples, ultra-low carryover, and fast injection cycles for HPLC/UHPLC workflows.

The KNAUER AZURA® AS 6.1L is a high-performance autosampler designed for automated sample injection in HPLC/UHPLC systems, offering high capacity, precision, and flexibility for both routine and high-throughput applications.The autosampler supports:<ul><li>up to 768 sample positions (microtiter plates)</li><li>up to 108 standard 1.5 mL vials</li></ul>A highly effective internal and external needle wash system minimizes carryover to extremely low levels. The system is also fast, with a complete injection cycle taking less than one minute, including needle washing.Three injection modes are supported:<ul><li>full loop filling (highest precision)</li><li>partial loop filling (variable volumes)</li><li>µl pickup (loss-free injection of small volumes)</li></ul>The integrated ILD™ (Intermediate Loop Decompression) valve ensures accurate high-pressure injections without sample dilution and reduces pressure spikes, protecting the column.<h4>Key Features</h4><ul><li>Autosampler for HPLC/UHPLC systems</li><li>Up to 768 sample positions</li><li>Up to 108 vials (1.5 mL)</li><li>Ultra-low carryover (&lt; 0.0003%)</li><li>Fast injection cycle (&lt; 1 min)</li><li>3 injection modes (full loop, partial loop, µl pickup)</li><li>ILD™ technology for high-pressure injection</li><li>PASA™ (pressure-assisted sample aspiration)</li><li>Optional sample cooling (4–40 °C)</li><li>Missing vial/plate detection</li><li>Supports precolumn derivatization</li></ul><h3>Technical Specifications</h3><h4>Sample Injection</h4><ul><li>Injection volume range: 0.1 µl – 10 mL</li><li>Precision:<ul><li>Full loop: &lt; 0.3% RSD</li><li>Partial loop: &lt; 0.5% RSD</li><li>µl pickup: &lt; 1.0% RSD</li></ul></li><li>Accuracy: 0.2 µl (250 µl syringe)</li></ul><h4>Performance</h4><ul><li>Carryover:<ul><li>&lt; 0.0015% (standard)</li><li>&lt; 0.0003% (extended wash)</li></ul></li><li>Injections per vial: max. 9</li><li>Cycle time:<ul><li>7 s (same vial)</li><li>14 s (different vials)</li><li>&lt; 60 s total</li></ul></li></ul><h4>Capacity &amp; Compatibility</h4><ul><li>Microtiter plates: ANSI SLAS standard</li><li>Max vial/plate height: 47 mm</li></ul><h4>Additional Features</h4><ul><li>Headspace pressure (bubble prevention)</li><li>Precolumn derivatization</li><li>Sample tray cooling (optional, 4–40 °C)</li><li>Vial detection sensor</li></ul><h4>Materials</h4><ul><li>ETFE, PTFE, stainless steel, glass, Vespel</li><li>Wide chemical compatibility</li></ul><h4>Control &amp; Communication</h4><ul><li>LAN / Ethernet</li><li>Analog inputs</li><li>TTL inputs (start, stop, freeze)</li><li>Relay output (alarm, marker)</li></ul><h4>Operating Conditions</h4><ul><li>Temperature: 10–40 °C</li><li>Humidity: 20–80%</li></ul>

KNAUER AZURA CT 2.1 Column Thermostat

KNAUER AZURA CT 2.1 column thermostat with Peltier control (5–85 °C), high stability, and optional eluent pre-heating for precise HPLC separations.

The KNAUER AZURA CT 2.1 is a cost-effective column thermostat designed for precise and stable temperature control in HPLC applications.The instrument uses a microprocessor-controlled Peltier element, enabling both heating and cooling in the range of 5–85 °C. Its high temperature stability allows for programming linear and non-linear temperature gradients, improving separation performance.For advanced applications, the system can be optionally equipped with an eluent pre-heating cartridge, ensuring consistent temperature conditions, improved selectivity, and better peak shapes.Its compact design supports flexible integration and accommodates multiple columns.<h4>Key Features</h4><ul><li>Column thermostat for HPLC applications</li><li>Temperature range 5–85 °C</li><li>Peltier technology (heating and cooling)</li><li>High temperature stability (±0.1 °C)</li><li>Accurate temperature control (±0.2 °C)</li><li>Programmable temperature gradients</li><li>Optional eluent pre-heating</li><li>Supports multiple columns</li><li>Compact and robust design</li><li>Built-in safety features</li></ul><h3>Technical Specifications</h3><h4>Thermostatting</h4><ul><li>Technology: Peltier (heating &amp; cooling)</li><li>Temperature range: 5–85 °C</li><li>Heating/cooling rate: 2 °C/min</li><li>Accuracy: ± 0.2 °C</li><li>Stability: ± 0.1 °C</li><li>Air circulation: fan-assisted bidirectional flow</li></ul><h4>Column Compartment</h4><ul><li>Max number of columns: up to 8</li><li>Max length: 325 mm</li><li>Max diameter: 35 mm</li><li>Compatibility:<ul><li>125 mm × 4.6 mm ID (with precolumn)</li><li>300 mm × 4.6 mm ID</li><li>300 mm × 16 mm ID</li></ul></li></ul><h4>Internal Dimensions</h4><ul><li>90 × 390 × 47 mm</li></ul><h4>Safety</h4><ul><li>Self-check and auto-calibration at startup</li><li>Adjustable shut-off temperature</li><li>Leak sensor with acoustic alarm</li></ul><h4>Control &amp; Communication</h4><ul><li>LAN interface</li><li>Optional Mobile Control (stand-alone operation)</li></ul><h4>Power &amp; Dimensions</h4><ul><li>Power supply: 90–230 V, 50–60 Hz</li><li>Power consumption: 100 W</li><li>Dimensions: 150 × 470 × 310 mm</li><li>Weight: 8.4 kg</li></ul><h4>Optional Accessories</h4><ul><li>Eluent pre-heating cartridge<ul><li>for capillaries 0.1 mm / 0.18 mm ID</li></ul></li></ul>

KNAUER AZURA Valve Unifier VU 4.1

KNAUER AZURA VU 4.1 valve drive enables fast automated valve switching with RFID identification for HPLC/UHPLC systems.

The KNAUER AZURA VU 4.1 Valve Unifier is a compact valve drive unit designed for automated valve switching in HPLC/UHPLC systems. It enables precise and fast control of liquid flow paths, which is essential for applications such as column switching, sample injection, eluent selection, and fractionation.Due to its ultra-fast switching speed, the flow path is interrupted only briefly, significantly reducing pressure spikes and improving system stability.The device uses RFID technology for automatic valve identification, ensuring easy and error-free valve exchange. Integrated GLP data monitoring simplifies maintenance tasks such as rotor seal replacement.The unit can be operated:<ul><li>stand-alone via display</li><li>via software</li><li>through LAN or analog I/O</li></ul>This makes it easy to integrate into almost any LC system.<h4>Key Features</h4><ul><li>Universal valve drive for &gt;40 valve types</li><li>Ultra-fast switching (minimal pressure spikes)</li><li>RFID valve identification</li><li>GLP data monitoring for maintenance</li><li>Standalone operation via display</li><li>Integration into LC systems (LAN, analog, software)</li><li>Compact design</li><li>Easy maintenance and valve exchange</li><li>Flexible use in LC and industrial applications</li></ul><h3>Technical Specifications</h3><h4>Communication &amp; Control</h4><ul><li>Interfaces: LAN, display, terminal strip</li><li>Control:<ul><li>display (stand-alone)</li><li>software</li><li>event control</li></ul></li><li>Inputs:<ul><li>Home</li><li>Backward/Inject</li><li>Forward/Load</li><li>Start</li></ul></li><li>Outputs:<ul><li>Trigger out</li><li>Event output</li></ul></li></ul><h4>Performance &amp; Features</h4><ul><li>Ultra-fast valve switching</li><li>Reduced pressure peaks</li><li>Supports &gt;40 valve types</li><li>RFID valve recognition</li><li>GLP maintenance tracking</li></ul><h4>Operating Conditions</h4><ul><li>Temperature: 4–40 °C</li><li>Humidity: &lt; 90% non-condensing</li></ul><h4>Power &amp; Dimensions</h4><ul><li>Power supply: external 24 V DC</li><li>Power consumption: 65 W</li><li>Dimensions: 80 × 123 × 192 mm</li><li>Weight: 1.9 kg</li></ul><h4>Typical Applications</h4><ul><li>Column switching</li><li>Eluent selection</li><li>Sample injection</li><li>Fraction collection</li><li>LC workflow automation</li><li>Dosing systems in chemical industry</li></ul>

KNAUER Sepapure oliGO 120-3 Column

KNAUER Sepapure oliGO 120-3 column for oligonucleotide analysis in RP and IP-RP modes with UHPLC performance and low back pressure.

The KNAUER Sepapure® oliGO 120-3 is a high-performance HPLC/UHPLC column optimized for oligonucleotide analysis in both reversed-phase (RP) and ion-pair reversed-phase (IP-RP) modes.The column is based on hybrid silica with advanced endcapping and hydrophobic modification, ensuring stable interactions, high reproducibility, and long lifetime, even under demanding conditions.With 3 µm particles, the column delivers UHPLC performance while maintaining low back pressure, allowing use even on standard HPLC systems.It is ideal for:<ul><li>identification</li><li>quantification</li><li>quality control (QC) of oligonucleotides.</li></ul><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/KNAUER_Sepapure_oli_GO_120_3_Column_3_e306727053.jpg" alt="KNAUER: Sepapure oliGO 120-3 Column" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_KNAUER_Sepapure_oli_GO_120_3_Column_3_e306727053.jpg 245w," sizes="100vw" width="882" height="478"><h4>Key Features</h4><ul><li>Optimized for oligonucleotides</li><li>Supports RP and IP-RP modes</li><li>UHPLC performance with low back pressure</li><li>3 µm particles for high resolution</li><li>18% carbon load</li><li>Wide pH range (1.5–10)</li><li>High chemical stability</li><li>Compatible with standard HPLC systems</li><li>High reproducibility and robustness</li><li>Suitable for extreme pH and temperature conditions</li></ul><h3>Technical Specifications</h3><h4>General</h4><ul><li>Separation modes: RP / IP-RP</li><li>Endcapping: Yes</li><li>USP classification: L1</li><li>Connection: 1/16"</li></ul><h4>Column Parameters</h4><ul><li>Particle size: 3 µm</li><li>Pore size: 120 Å</li><li>Surface area: 300 m²/g</li><li>Carbon load: 18%</li></ul><h4>Operating Conditions</h4><ul><li>pH range: 1.5 – 10</li><li>Max pressure: 413 bar</li><li>Max temperature: 60 °C</li></ul><h3>Technology Advantages</h3><h4>Low Back Pressure</h4><ul><li>enables UHPLC performance on HPLC systems</li><li>protects instrumentation</li><li>reduces wear and clogging</li><li>minimizes oligonucleotide aggregation</li></ul><h4>IP-RP Optimization</h4><ul><li>ideal pH range: 7.0 – 9.5</li><li>combines hydrophobic and ionic interactions</li><li>enables high-resolution separation</li></ul><h4>Cost-effective Hardware</h4><ul><li>no need for inert hardware</li><li>optimized for routine analytical use</li><li>tested with no impact on performance</li></ul><h4>Typical Applications</h4><ul><li>Oligonucleotide analysis</li><li>Biopharmaceutical QC</li><li>Polar molecule analysis</li><li>Method development (extreme pH/temperature)</li></ul>

KNAUER Sepapure Laboratory Filtration

Sepapure laboratory filtration includes syringe filters, membranes, and filter units for clean, precise, and reproducible results.

The Sepapure® Laboratory Filtration range provides a comprehensive solution for laboratory sample filtration, focusing on purity, precision, and reproducibility.The portfolio includes:<ul><li>syringe filters</li><li>membrane disc filters</li><li>filter units</li><li>filter holders</li></ul>These products are designed to ensure maximum sample recovery, minimal loss, and broad compatibility across analytical, pharmaceutical, and routine laboratory applications.<h4>Key Features</h4><ul><li>High filtration purity and reproducibility</li><li>Minimal sample loss</li><li>Color-coded identification</li><li>Wide range of membrane materials</li><li>Broad application compatibility</li><li>Pressure resistance (&gt;6 bar)</li><li>Eco-friendly reusable solutions</li></ul><h3>Product Variants</h3><h4>Sepapure® Syringe Filters</h4><ul><li>Color-coded and labeled</li><li>Integrated polypropylene prefilter</li><li>Low hold-up volume → minimal sample loss</li><li>High pressure resistance (&gt;6 bar)</li><li>Wide application compatibility</li></ul><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/KNAUER_Sepapure_Laboratory_Filtration_5_00f6e96bbe.jpg" alt="KNAUER: Sepapure® Syringe Filters" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_KNAUER_Sepapure_Laboratory_Filtration_5_00f6e96bbe.jpg 245w," sizes="100vw" width="1216" height="196"><h4>Sepapure® Membrane Disc Filters</h4><ul><li>Various membrane materials</li><li>Efficient separation for complex samples</li><li>High filtrate purity</li><li>Suitable for lab and research use</li></ul><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/KNAUER_Sepapure_Laboratory_Filtration_3_1e207905e0.jpg" alt="KNAUER: Sepapure® Membrane Disc Filters" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_KNAUER_Sepapure_Laboratory_Filtration_3_1e207905e0.jpg 156w," sizes="100vw" width="1000" height="1000"><h4>Filter Units (Glass Vacuum Units)</h4><ul><li>Glass vacuum filtration systems</li><li>Available volumes: 1000 mL and 2000 mL</li><li>Ground glass or rubber joints</li><li>Compatible with membrane filters</li><li>High chemical resistance and durability</li></ul><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/KNAUER_Sepapure_Laboratory_Filtration_2_86cf0cc5f8.jpg" alt="KNAUER: Filter Units (Glass Vacuum Units)" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_KNAUER_Sepapure_Laboratory_Filtration_2_86cf0cc5f8.jpg 156w," sizes="100vw" width="1000" height="1000"><h4>Filter Holders</h4><ul><li>Reusable and durable</li><li>Eco-friendly (waste reduction)</li><li>Versatile applications</li><li>High mechanical stability</li></ul><h4>Typical Applications</h4><ul><li>Sample preparation for HPLC/LC-MS</li><li>Mobile phase filtration</li><li>Environmental analysis</li><li>Pharmaceutical QC</li><li>Biochemical and clinical workflows</li></ul>

KNAUER Vials & Caps

KNAUER vials and caps for HPLC/UHPLC with high chemical resistance, multiple closure types, and optimized solutions for precise sample handling.

The KNAUER Vials &amp; Caps range provides a complete solution for sample preparation in HPLC/UHPLC analysis, where precision, purity, and sample integrity are critical.Selecting the correct vial and cap combination directly impacts:<ul><li>result reproducibility</li><li>contamination prevention</li><li>minimization of evaporation</li><li>autosampler performance</li></ul>KNAUER offers a wide variety of configurations including:<ul><li>glass types (clear / amber)</li><li>closure types (screw, crimp, snap)</li><li>septa (pre-slit / non pre-slit)</li><li>accessories (µ-inserts for small volumes)</li></ul><h3>Product Variants</h3><h4>Sample Vials</h4><ul><li>Neck types:<ul><li>screw neck</li><li>crimp neck</li><li>snap ring</li></ul></li><li>Materials:<ul><li>clear glass</li><li>amber glass (UV protection)</li></ul></li><li>High chemical resistance</li><li>Compatible with micro-inserts</li></ul><h4>Caps</h4><ul><li>Compatible with all vial types</li><li>Options:<ul><li>pre-slit septa</li><li>solid septa</li></ul></li><li>Optimized sealing</li><li>Suitable for automated and manual sampling</li></ul><h3>Vial Selection Guide</h3><h4>Glass Color</h4><ul><li>Amber glass<ul><li>UV protection</li><li>ideal for light-sensitive compounds (vitamins, steroids, pharmaceuticals)</li></ul></li><li>Clear glass<ul><li>maximum visibility</li><li>ideal for routine applications</li></ul></li></ul><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/KNAUER_Vials_and_Caps_glass_color_bd1238185e.jpg" alt="KNAUER: Vials &amp; Caps - Glass color" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_KNAUER_Vials_and_Caps_glass_color_bd1238185e.jpg 155w," sizes="100vw" width="435" height="437"><h4>Closure Types</h4><ul><li>Screw Neck<ul><li>resealable</li><li>ideal for volatile samples and storage</li></ul></li><li>Crimp Neck<ul><li>tightest seal</li><li>ideal for highly volatile samples</li></ul></li><li>Snap Ring<ul><li>tool-free handling</li><li>suitable for short-term use</li></ul></li></ul><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/KNAUER_Vials_and_Caps_closure_type_c6c7a61418.jpg" alt="KNAUER: Vials &amp; Caps - Closure type" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_KNAUER_Vials_and_Caps_closure_type_c6c7a61418.jpg 245w," sizes="100vw" width="978" height="389"><h4>Septum Types</h4><ul><li>Pre-slit septum<ul><li>easier needle penetration</li><li>ideal for autosamplers</li><li>prevents vacuum formation</li></ul></li><li>Non pre-slit septum<ul><li>tighter seal</li><li>ideal for storage and evaporation control</li></ul></li></ul><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/KNAUER_Vials_and_Caps_septum_type_0b6afde0e9.jpg" alt="KNAUER: Vials &amp; Caps - Septum type" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_KNAUER_Vials_and_Caps_septum_type_0b6afde0e9.jpg 245w," sizes="100vw" width="551" height="343"><h4>µ-Inserts (Small Volumes)</h4><ul><li>Reduce sample volume requirements</li><li>Maximize recovery</li><li>Ideal for valuable or limited samples</li></ul><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/KNAUER_Vials_and_Caps_3_b697f0f41b.webp" alt="KNAUER: Vials &amp; Caps - Micro inserts" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_KNAUER_Vials_and_Caps_3_b697f0f41b.webp 239w," sizes="100vw" width="1000" height="653">

KNAUER Capillaries & Tubing

KNAUER Capillaries & Tubing provide high-pressure LC capillaries and tubing up to 1200 bar, including MarvelXACT™ tool-free UHPLC connection systems.

KNAUER Capillaries &amp; Tubing provide a wide range of capillaries and tubing solutions for analytical and preparative HPLC, UHPLC, and FPLC applications. The portfolio includes stainless steel, PEEK, PTFE, and other tubing materials designed for reliable LC connections at pressures up to 1200 bar. The range also features innovative MarvelXACT™ capillaries with tool-free fingertight connections and a patented torque-limiting mechanism for secure and trouble-free operation.<h4>Key Features</h4><ul><li>Capillaries and tubing for HPLC, UHPLC, and FPLC</li><li>Maximum pressure up to 1200 bar</li><li>Materials include stainless steel, PEEK, PTFE, PFA, ETFE, and more</li><li>Suitable for analytical and preparative applications</li><li>MarvelXACT™ fingertight connection system</li><li>Patented torque-limiting “click” mechanism</li><li>Automatic adjustment to different port depths</li><li>More than 100 connection/disconnection cycles</li><li>PEEK capillaries for maximum biocompatibility</li><li>User-cuttable standard capillaries</li><li>Tubing for low-pressure solvent and waste lines</li></ul><h4>MarvelXACT™ Capillaries</h4><ul><li>Recommended for AZURA® Analytical systems</li><li>Tool-free installation</li><li>Flexible 1/32” OD tubing</li><li>compatible with KNAUER standard 1/16” receiving ports</li><li>Pre-installed fittings</li><li>Eliminates under- and over-tightening</li><li>Patented torque-limiting mechanism</li><li>Flexible tubing for easy routing</li><li>Bottom-port sealing without ferrules</li></ul><h4>Available Options</h4><ul><li>Stainless steel capillaries for high-pressure applications</li><li>PEEK capillaries for biocompatible workflows</li><li>PTFE, PFA, ETFE, and Tefzel® tubing</li><li>User-customizable capillary lengths</li><li>Tubing for solvent and waste connections</li></ul>

KNAUER Pipettes

KNAUER Pipetting Solutions combine ergonomic BlueOrchid pipettes, high-purity pipette tips, reload systems, and sustainable rack boxes for accurate, comfortable, and contamination-free liquid handling workflows.

KNAUER Pipetting Solutions combine ergonomic design, precision engineering, and high-quality consumables to support reliable liquid handling workflows in analytical, biological, and routine laboratory applications. The portfolio includes BlueOrchid micropipettes, premium pipette tips, reload systems, and sustainable rack boxes designed to deliver maximum accuracy, user comfort, and workflow efficiency.<h4>BlueOrchid Pipettes</h4>KNAUER BlueOrchid pipettes are designed for effortless daily pipetting with reduced hand strain and reliable long-term performance. The lightweight and balanced construction, combined with a silicone-based shock absorption mechanism and magnet-assisted piston system, minimizes pipetting and tip ejection forces for fatigue-free operation.The pipettes feature intuitive one-handed volume adjustment with a secure locking mechanism and a large 4-digit display for easy readability. All models are ISO 8655-6 calibrated to ensure high accuracy and precision.Available single-channel volume ranges include:<ul><li>0.1–2.5 µL</li><li>0.5–10 µL</li><li>2–20 µL</li><li>5–50 µL</li><li>10–100 µL</li><li>20–200 µL</li><li>100–1,000 µL</li><li>500–5,000 µL</li><li>1,000–10,000 µL</li><li>Fixed-volume 150 µL model</li></ul><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/KNAUER_Pipettes_6_3d401a1c67.jpg" alt="KNAUER: Pipettes" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_KNAUER_Pipettes_6_3d401a1c67.jpg 241w," sizes="100vw" width="1046" height="677">Key characteristics:<ul><li>Ergonomic low-force pipetting design</li><li>Color-coded volume identification</li><li>Autoclavable and chemically resistant construction</li><li>UV-resistant materials</li><li>No recalibration required after sterilization</li><li>Compatible with KNAUER pipette tips and many third-party brands</li></ul><h4>Pipette Tips</h4>KNAUER pipette tips are manufactured in Germany from high-quality medical-grade virgin polypropylene to ensure contamination-free and highly reproducible pipetting. The product range includes eight tip sizes from 10 µL to 10 mL, including extra-long 10 µL tips optimized for recovery of very small sample volumes.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/KNAUER_Pipette_Tips_71e87b2e4b.webp" alt="KNAUER: Pipette Tips" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_KNAUER_Pipette_Tips_71e87b2e4b.webp 100w," sizes="100vw" width="690" height="1077">The tips are designed with optimized cone geometry for secure pipette fitting and low-force attachment and ejection. A conical tip opening and ultra-smooth internal surface reduce droplet formation and minimize sample retention.Key advantages:<ul><li>Free of DNase, RNase, human DNA, pyrogens, and PCR inhibitors</li><li>Autoclavable and non-wettable</li><li>US FDA-approved virgin polypropylene</li><li>Universal compatibility with major pipette brands</li><li>Graduation marks for rapid volume verification</li><li>Available in bulk bags or reload systems</li><li>Yellow and blue versions available for selected tip sizes</li></ul>Available packaging options:<ul><li>Bulk bags for economical refilling</li></ul><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/KNAUER_Bulk_Bags_f99e73dba3.webp" alt="KNAUER: Bulk Bags" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_KNAUER_Bulk_Bags_f99e73dba3.webp 156w," sizes="100vw" width="690" height="690"><ul><li>Reload units for fast one-handed box refilling and reduced plastic waste</li></ul><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/KNAUER_Reloads_48b0e2cf9d.webp" alt="KNAUER: Reload units" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_KNAUER_Reloads_48b0e2cf9d.webp 245w," sizes="100vw" width="690" height="343"><h4>Reload Systems</h4>KNAUER reload systems are designed to simplify laboratory workflows while reducing environmental impact. Reloads are available for 10 µL, 200 µL, and 1,000 µL pipette tips and allow quick replacement of empty rack inserts with minimal handling effort.Advantages of reload systems:<ul><li>One-handed reload operation</li><li>Reduced plastic consumption</li><li>Space-saving storage</li><li>Color-coded rack inserts for quick identification</li><li>Optimized for routine high-throughput workflows</li></ul><h4>Rack Boxes</h4>KNAUER rack boxes provide secure and sustainable storage for pipette tips. The boxes are manufactured from 100% recycled plastic sourced from pipette tip production and are fully autoclavable.The stackable design allows safe and space-efficient storage, while the easy-open lid and color-coded rack inserts improve laboratory organization and workflow efficiency.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/KNAUER_Tip_boxes_1d59517540.webp" alt="KNAUER: Rack boxes" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_KNAUER_Tip_boxes_1d59517540.webp 245w," sizes="100vw" width="1024" height="427">Available rack box versions:<ul><li>10 µL / 10 µL XL pipette tips</li><li>200 µL / 300 µL pipette tips</li><li>1,000 µL pipette tips</li><li>1,250 µL pipette tips</li></ul>Key features:<ul><li>Made from 100% recycled plastic</li><li>Stackable construction</li><li>Secure tip positioning</li><li>Easy one-handed handling</li><li>Compatible with single- and multi-channel pipettes</li><li>Sustainable and reusable design</li></ul>

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