EU Regulation 396/2005: Pesticide Residue Testing and the Critical Role of QuEChERS Evaporation in Food Safety

<div><div>Researchers led by <a target="_blank" rel="noopener noreferrer" href="https://kudova.group.uochb.cz/en">Eva Kudová</a> from IOCB Prague and Jitka Viktorová from UCT Prague have identified new androstane-based steroid derivatives that can significantly improve the effectiveness of existing antibiotics against multidrug-resistant Staphylococcus aureus.</div></div><div>The team screened dozens of natural steroidal hormones and synthetic derivatives to see whether they could block bacterial efflux pumps – mechanisms that bacteria use to eject antibiotics and survive treatment. Two compounds emerged as particularly promising: they inhibited efflux pumps and lowered the effective doses of antibiotics such as ciprofloxacin and erythromycin.Further analysis showed that one of the compounds also suppressed genes linked to bacterial virulence. Another key finding is that the most active molecules are non-toxic to human immune cells and showed no detectable endocrine activity, suggesting a favorable safety profile.These findings support the idea that rationally designed steroid-based molecules could act as antibiotic adjuvants, helping existing drugs overcome bacterial resistance.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/IOCB_Prague_Steroidal_hormones_and_neurosteroids_novel_therapeutic_strategies_in_bacterial_infections_8e5d2a7b48.jpg" alt="IOCB Prague: Steroidal hormones and neurosteroids – novel therapeutic strategies in bacterial infections" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_IOCB_Prague_Steroidal_hormones_and_neurosteroids_novel_therapeutic_strategies_in_bacterial_infections_8e5d2a7b48.jpg 222w," sizes="100vw" width="1258" height="886"><blockquote><h4>Original Article</h4><h4><a target="_blank" rel="noopener noreferrer" href="https://www.sciencedirect.com/science/article/pii/S0223523426001613?via%3Dihub">Steroidal hormones and neurosteroids - novel therapeutic strategies in bacterial infections: Design, synthesis, and biological evaluation</a></h4>Daniela Brdová, Bára Křížkovská, Jan Špaček, Zdeněk Míchal, Eva Jablonská, Ondřej Strnad, Hana Chodounská, Eszter Szánti-Pintér, Marina Morozovová, Václav Hanžl, Jan Tkadlec, Martijn Riool, Jan Lipov, Jitka Viktorová, Eva Kudová&nbsp;Eur. J. Med. Chem., 2026, 308, 118716<a target="_blank" rel="noopener noreferrer" href="https://doi.org/10.1016/j.ejmech.2026.118716">https://doi.org/10.1016/j.ejmech.2026.118716</a><h6>licensed under <a target="_blank" rel="noopener noreferrer" href="https://creativecommons.org/licenses/by/4.0/">CC-BY 4.0</a></h6></blockquote><h4>Abstract</h4>The global rise of antibiotic resistance necessitates novel therapeutic strategies for infectious diseases. Inhibition of bacterial efflux pumps, which contribute to multidrug resistance, represents a promising approach to restore or even increase the efficacy of existing antibiotics. Using fluorescence-based ethidium bromide accumulation, broth microdilution, and checkerboard assays, we evaluated 26 endogenous steroidal hormones and neurosteroids, along with 30 synthetic derivatives, for their ability to enhance antibiotic susceptibility in multidrug-resistant Staphylococcus aureus. Structure-activity relationship analysis identified compounds 13 and 16 as lead candidates, exhibiting strong efflux pump inhibition and marked reductions in the minimum inhibitory concentrations of ciprofloxacin and erythromycin. Both compounds showed additive effects in checkerboard assays. Modifications at C-3 (polar substitution) and C-17 (3α,5β-stereochemistry and nonpolar substitution) were essential for potent efflux inhibition and sensitization, although these modifications were not additive when combined. Transcriptome analysis further revealed that compound 13 significantly downregulated S. aureus virulence-associated genes when administered alone or in combination with antibiotics. Cytotoxicity assessment in human peripheral blood mononuclear cells and receptor transactivation assays for estrogen, androgen, and progesterone receptors indicated that the most active derivatives were non-toxic and lacked detectable endocrine activity, suggesting a favorable safety profile. Overall, these findings support the concept that rationally designed andostane-based steroidal scaffolds can function as competitive bacterial efflux pump inhibitors and serve as potential antibiotic adjuvants to mitigate efflux-mediated resistance.<h4>Instrumentation</h4><h5>Structural characterization</h5><ul><li>AVANCE III 400 MHz NMR spectrometer (Bruker)</li><li><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/library?mainauthorItems=3&amp;search=LTQ+Orbitrap+XL">LTQ Orbitrap XL HRMS</a> (Thermo Fisher Scientific, ESI)</li></ul></div>

Steroidal hormones and neurosteroids – novel therapeutic strategies in bacterial infections

Metformin is currently the first-line oral drug of choice for the treatment of type 2 diabetes. It reduces glucose production in the liver, improves tissue sensitivity to insulin, and does not cause weight gain or hypoglycemia, which sets it apart from some other antidiabetic drugs. Moreover, its long-term beneficial effects on the risk of cardiovascular complications and mortality in people with type 2 diabetes have been well established. Researchers from the Institute of Physiology CAS (IPHYS) have identified a new group of blood metabolites that could help physicians objectively monitor whether patients with type 2 diabetes are taking their metformin as prescribed.<h4>New biomarkers for metformin use</h4>A team led by Tomáš Čajka from the Laboratory of Translational Metabolism at IPHYS analyzed plasma samples from 637 patients with type 2 diabetes treated with metformin and 143 non-diabetic controls using advanced metabolomics and lipidomics. Among 614 detected metabolites, they identified five from the group of N-lactoyl-amino acids (e.g. N‑lactoyl-phenylalanine), which had previously been seen as unknown signals due to missing reference spectra in databases. The levels of these metabolites in the blood closely reflected the plasma concentrations of metformin. In patients with the highest metformin exposure, the concentrations of these metabolites were up to 7.2 times higher than in controls.<h4>A sensitive “fingerprint” of the drug’s effect</h4>N-Lactoyl-amino acids are formed in cells by combining lactate and amino acids, thus reflecting the metformin-induced changes in cellular energy metabolism. “Importantly, even though they occur in plasma only at nanomolar concentrations, they reliably distinguish patients who take metformin regularly from those who take it irregularly or not at all,” emphasizes T. Čajka.<h4>Metabolomics in practice and international collaboration</h4>The study also provides a detailed description of broader metabolic changes in type 2 diabetes, including increases in lactate, organic acids, and branched-chain amino acids, as well as extensive remodelling of the lipid profile. In addition to T. Čajka’s team, collaborators from the Institute for Clinical and Experimental Medicine in Prague and the West Coast Metabolomics Center (University of California, Davis) also participated in the study.The results demonstrate that advanced metabolomics approaches developed at IPHYS within the CarDia project can find highly practical applications both in clinical studies and in personalized monitoring of treatment in patients with diabetes.<blockquote><h4>The original article</h4><h4><a target="_blank" rel="noopener noreferrer" href="https://ascpt.onlinelibrary.wiley.com/doi/10.1002/cpt.70205">Untargeted Metabolomics Identifies N-Lactoyl-Amino Acids as Dose-Responsive Plasma Biomarkers of Metformin Adherence in Type 2 Diabetes</a></h4>Tomas Cajka, Jiri Hricko, Lucie Rudl Kulhava, Michaela Paucova, Michaela Novakova, Veronika Hola, Stanislava Rakusanova, Oliver Fiehn, Vojtech Skop, Ivana Lankova, Iva Miskova, Terezie Pelikanova, Martin HaluzikClin Pharmacol Ther, 119: 1057-1069<a target="_blank" rel="noopener noreferrer" href="https://doi.org/10.1002/cpt.70205">https://doi.org/10.1002/cpt.70205</a><h6>licensed under <a target="_blank" rel="noopener noreferrer" href="https://creativecommons.org/licenses/by/4.0/">CC-BY 4.0</a></h6></blockquote><h4>Abstract</h4>Metformin is the most widely prescribed antidiabetic drug, yet adherence remains difficult to objectively assess. Using untargeted metabolomics and lipidomics, we analyzed plasma from 637 patients with type 2 diabetes (T2D) with confirmed metformin use and 143 nondiabetic controls, annotating 614 metabolites. Patients were stratified by plasma metformin into sub-therapeutic, therapeutic, and supra-therapeutic groups, and associations were evaluated by multiple linear regression and composite metabolite ranking. Five previously unannotated features were structurally identified as N-lactoyl-amino acids, whose levels correlated strongly with plasma metformin (ρ = 0.42–0.55, P &lt; 0.0001) and increased up to 7.2-fold in the supra-therapeutic group (&gt; 2000 ng/mL). While N-lactoyl-amino acids were consistently detected in the nanomolar range, they still displayed robust and dose-dependent associations with metformin. Broader metabolic changes in T2D included elevated lactate, organic acids, and branched-chain amino acids, together with reduced urea cycle metabolites. Lipidomics showed increases in saturated triacylglycerols and diacylglycerols and decreases in cholesteryl esters, sphingomyelins, and phospholipids. These findings establish N-lactoyl-amino acids as robust, dose-responsive plasma biomarkers of metformin exposure. Despite being up to four orders of magnitude less abundant than their amino acid precursors, they sensitively reflect mitochondrial lactate overflow and pharmacodynamic adaptation, offering objective assessment of adherence.

New blood biomarkers reveal how faithfully diabetes patients take metformin

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The Czech Academy of Sciences (CAS) was established by Act No. 283/1992 Coll. as the Czech successor of the former Czechoslovak Academy of Sciences. It is set up as a complex of 54 public research institutions.

Czech Academy of Sciences

The Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences (IOCB Prague) is a leading scientific institution in the Czech Republic, recognized internationally. Its primary mission is basic research in the fields of chemical biology and medicinal chemistry, organic and material oriented chemistry, chemistry of natural compounds, biochemistry and molecular biology, physical chemistry, theoretical chemistry, and analytical chemistry. 

Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences

Organomation, founded in 1959, designs and manufactures high-quality nitrogen evaporators and extraction systems. Known for innovation and durability, their lab instruments are used globally for efficient sample preparation with strong customer support.

Organomation

Watrex P280 HPLC Pump Prep, stainless steel

Explore the future of preparative chromatography with PrecisionPrep™ P280, a state-of-the-art pump that redefines efficiency and precision.

Explore the future of preparative chromatography with PrecisionPrep™ P280, a state-of-the-art pump that redefines efficiency and precision.<blockquote>Price: 4 985<bdi>&nbsp;€ ex VAT</bdi></blockquote>Featuring a unique parallel double-piston arrangement, this preparative chromatography pump is designed to meet the demands of high-flow applications while ensuring a stable and precise flow profile.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Watrex_P280_HPLC_Pump_Prep_stainless_steel_b864d583c2.jpg" alt="Watrex P280 HPLC Pump Prep, stainless steel.jpg" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Watrex_P280_HPLC_Pump_Prep_stainless_steel_b864d583c2.jpg 235w," sizes="100vw" width="1024" height="681"><h3>PUMP FEATURES</h3><h5>Parallel Double-Piston Arrangement:</h5><ul><li>The innovative dual-piston design allows for parallel operation, optimizing flow distribution and enhancing efficiency.</li><li>Experience enhanced performance and productivity in preparative chromatography with this cutting-edge arrangement.</li><li>Achieve unmatched versatility with flow rates reaching up to 80 ml/min.</li><li>Tailor the pump’s performance to accommodate a wide range of preparative chromatography applications.</li></ul><h5>Stable and Precise Flow Profile:</h5><ul><li>Enjoy a stable and precise flow profile, critical for reproducibility in preparative separations.</li><li>The P280 ensures consistent and reliable results in every run, minimizing experimental variability.</li></ul><h5>User-Friendly Interface:</h5><ul><li>The user-friendly interface simplifies operation, allowing for seamless control and monitoring of preparative chromatography processes.</li><li>Easily program and adjust parameters to suit the specific requirements of your purification protocols.</li></ul><h5>Applications:</h5><ul><li>Purification of Pharmaceuticals</li><li>Isolation of Natural Products</li><li>Large-scale Biomolecule Purification</li><li>Industrial Separations/li&gt;</li></ul><h5>Reliability Beyond Measure:</h5><ul><li>PrecisionPrep™ P280 is engineered for durability and reliability in demanding preparative chromatography applications.</li><li>Trust in its robust construction and precise engineering to deliver consistent results run after run.</li></ul><h4>Conclusion</h4>Elevate your preparative chromatography to new heights with PrecisionPrep™ P280. With a parallel double-piston arrangement, high flow rates, and an efficient pulse dampener, this pump is designed to meet the challenges of large-scale separations while ensuring a stable and precise flow profile. Choose PrecisionPrep™ for unparalleled efficiency and reliability in preparative chromatography.<h3>TECHNICAL SPECIFICATION</h3><ul><li>Flow Rates: 0,1 ml/min – 80 ml/min with step 0.1 ml/min</li><li>Pressure: 5 MPa/725 psi</li><li>Flow precision: ± 0,2% RSD @ 10mL/min</li><li>Flow accuracy: ± 1% @ 10mL/min</li><li>Pressure accuracy: ± 2% of full-scale, with 80:20 H2O/IPA</li><li>Pulsation: better than ± 1% @ 10mL/min</li><li>Remote control: USB</li><li>I/O connector: Start, Stop, Status, Error</li></ul>You can also visit this product on the <a target="_blank" rel="noopener noreferrer" href="https://watrex.com/obchod/chromatography/pumps/preparative-pumps/p280-pump-prep-stainless-steel/?utm_source=labrulez&amp;utm_medium=propagace&amp;utm_campaign=labrulez_produkty">Watrex website</a>.

Watrex P280 HPLC Pump Prep, PEEK, biocompatible

Explore the future of preparative chromatography with PrecisionPrep™ P280, a state-of-the-art pump that redefines efficiency and precision.<blockquote>Price: 4 985<bdi>&nbsp;€ ex VAT</bdi></blockquote>Featuring a unique parallel double-piston arrangement, this preparative chromatography pump is designed to meet the demands of high-flow applications while ensuring a stable and precise flow profile.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Watrex_P102_HPLC_pump_PEEK_5321aceaa0.jpg" alt="Watrex P280 HPLC Pump Prep, PEEK, biocompatible" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Watrex_P102_HPLC_pump_PEEK_5321aceaa0.jpg 208w," sizes="100vw" width="1024" height="768"><h3>PUMP FEATURES</h3><h5>Parallel Double-Piston Arrangement:</h5><ul><li>The innovative dual-piston design allows for parallel operation, optimizing flow distribution and enhancing efficiency.</li><li>Experience enhanced performance and productivity in preparative chromatography with this cutting-edge arrangement.</li><li>Achieve unmatched versatility with flow rates reaching up to 80 ml/min.</li><li>Tailor the pump’s performance to accommodate a wide range of preparative chromatography applications.</li></ul><h5>Stable and Precise Flow Profile:</h5><ul><li>Enjoy a stable and precise flow profile, critical for reproducibility in preparative separations.</li><li>The P280 ensures consistent and reliable results in every run, minimizing experimental variability.</li></ul><h5>User-Friendly Interface:</h5><ul><li>The user-friendly interface simplifies operation, allowing for seamless control and monitoring of preparative chromatography processes.</li><li>Easily program and adjust parameters to suit the specific requirements of your purification protocols.</li></ul><h5>Applications:</h5><ul><li>Purification of Pharmaceuticals</li><li>Isolation of Natural Products</li><li>Large-scale Biomolecule Purification</li><li>Industrial Separations/li&gt;</li></ul><h5>Reliability Beyond Measure:</h5><ul><li>PrecisionPrep™ P280 is engineered for durability and reliability in demanding preparative chromatography applications.</li><li>Trust in its robust construction and precise engineering to deliver consistent results run after run.</li></ul><h4>Conclusion</h4>Elevate your preparative chromatography to new heights with PrecisionPrep™ P280. With a parallel double-piston arrangement, high flow rates, and an efficient pulse dampener, this pump is designed to meet the challenges of large-scale separations while ensuring a stable and precise flow profile. Choose PrecisionPrep™ for unparalleled efficiency and reliability in preparative chromatography.<h3>TECHNICAL SPECIFICATION</h3><ul><li>Flow Rates: 0,1 ml/min – 80 ml/min with step 0.1 ml/min</li><li>Pressure: 5 MPa/725 psi</li><li>Flow precision: ± 0,2% RSD @ 10mL/min</li><li>Flow accuracy: ± 1% @ 10mL/min</li><li>Pressure accuracy: ± 2% of full-scale, with 80:20 H2O/IPA</li><li>Pulsation: better than ± 1% @ 10mL/min</li><li>Remote control: USB</li><li>I/O connector: Start, Stop, Status, Error</li></ul>You can also visit this product on the <a target="_blank" rel="noopener noreferrer" href="https://watrex.com/obchod/chromatography/pumps/preparative-pumps/p280-pump-prep-peek-biocompatible/?utm_source=labrulez&amp;utm_medium=propagace&amp;utm_campaign=labrulez_produkty">Watrex website</a>.

Watrex P224 HPLC Pump, dual head, PEEK, biocompatible

WATREX P224 semiprep chromatography pump is a versatile and reliable tool commonly employed in laboratory settings, particularly in applications requiring precise dosing.

WATREX P224 semiprep chromatography pump is a versatile and reliable tool commonly employed in laboratory settings, particularly in applications requiring precise dosing.<blockquote>Price: 4 985<bdi>&nbsp;€ ex VAT</bdi></blockquote>This pump is designed for semipreparative chromatography, which involves the separation and purification of compounds at a larger scale than analytical chromatography but smaller than preparative chromatography. The stainless steel version of the pump offers durability and chemical resistance, making it suitable for use with a wide range of solvents and samples.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Watrex_P102_HPLC_pump_PEEK_5321aceaa0.jpg" alt="Watrex: P224 HPLC Pump, dual head, PEEK, biocompatible" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Watrex_P102_HPLC_pump_PEEK_5321aceaa0.jpg 208w," sizes="100vw" width="1024" height="768"><h3>PUMP FEATURES</h3><ul><li>Flow Rate Control: P224 allows for precise control of flow rates, crucial for achieving accurate and reproducible results in chromatographic separations.</li><li>Pressure Control: P224 has a built-in pressure control system to maintain consistent pressure throughout the chromatographic process, ensuring optimal column performance.</li><li>Gradient Capability: Two or up to four P224 pumps offer gradient capabilities, allowing for the creation of complex elution profiles controlled from PC to enhance separation efficiency.</li><li>User-Friendly Interface: An intuitive and user-friendly interface facilitates easy operating and monitoring of the pump parameters, contributing to efficient workflow in the laboratory.</li><li>Compatibility: P224 is compatible with a variety of chromatography instruments and stationary phases commonly used in semipreparative applications.</li><li>Reliability and Durability: A robust construction and high-quality materials ensure the pump’s durability and reliability, minimizing downtime and maintenance requirements.</li><li>Precision in Dosing: P224 design prioritizes accuracy in dosing, making it suitable for applications where precise control over sample injection and elution volumes is essential.</li><li>Safety Features: Incorporation of safety features such as pressure sensors, and overpressure protection ensures the well-being of both the operator and the equipment.</li><li>Maintenance and Calibration: P224 pumps are easy to maintain and calibrate, with clear documentation provided by us for routine upkeep and troubleshooting.</li><li>Versatility: P224 supports a wide range of solvents and mobile phases commonly used in chromatography, offering flexibility for various applications.</li><li>Data Logging and Connectivity: The capability to log service data enhances operation traceability and documentation.</li></ul><h3>TECHNICAL SPECIFICATION</h3><ul><li>Flow Rates: 0,1 ml/min – 25,00 ml/min with step 0.1 ml/min (semiprep)</li><li>Pressure: 30 MPa/4300 psi</li><li>Flow precision: &nbsp;&nbsp;&nbsp;&nbsp;± 0,2% RSD @ 1mL/min. and 7 Mpa</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: better than ± 0.5% @ 1mL/min. and 7 MPa</li><li>Remote control: USB</li><li>I/O connector: Start, Stop, Status, Error</li></ul>You can also visit this product on the <a target="_blank" rel="noopener noreferrer" href="https://watrex.com/obchod/chromatography/pumps/preparative-pumps/p224-pump-dual-head-peek-biocompatible/?utm_source=labrulez&amp;utm_medium=propagace&amp;utm_campaign=labrulez_produkty">Watrex website</a>.

Watrex P224 HPLC Pump, dual head, Stainless Steel

WATREX P224 semiprep chromatography pump is a versatile and reliable tool commonly employed in laboratory settings, particularly in applications requiring precise dosing.<blockquote>Price: 4 985<bdi>&nbsp;€ ex VAT</bdi></blockquote>This pump is designed for semipreparative chromatography, which involves the separation and purification of compounds at a larger scale than analytical chromatography but smaller than preparative chromatography. The stainless steel version of the pump offers durability and chemical resistance, making it suitable for use with a wide range of solvents and samples.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Watrex_P280_HPLC_Pump_Prep_stainless_steel_b864d583c2.jpg" alt="Watrex: P224 HPLC Pump, dual head, Stainless Steel" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Watrex_P280_HPLC_Pump_Prep_stainless_steel_b864d583c2.jpg 235w," sizes="100vw" width="1024" height="681"><h3>PUMP FEATURES</h3><ul><li>Flow Rate Control: P224 allows for precise control of flow rates, crucial for achieving accurate and reproducible results in chromatographic separations.</li><li>Pressure Control: P224 has a built-in pressure control system to maintain consistent pressure throughout the chromatographic process, ensuring optimal column performance.</li><li>Gradient Capability: Two or up to four P224 pumps offer gradient capabilities, allowing for the creation of complex elution profiles controlled from PC to enhance separation efficiency.</li><li>User-Friendly Interface: An intuitive and user-friendly interface facilitates easy operating and monitoring of the pump parameters, contributing to efficient workflow in the laboratory.</li><li>Compatibility: P224 is compatible with a variety of chromatography instruments and stationary phases commonly used in semipreparative applications.</li><li>Reliability and Durability: A robust construction and high-quality materials ensure the pump’s durability and reliability, minimizing downtime and maintenance requirements.</li><li>Precision in Dosing: P224 design prioritizes accuracy in dosing, making it suitable for applications where precise control over sample injection and elution volumes is essential.</li><li>Safety Features: Incorporation of safety features such as pressure sensors, and overpressure protection ensures the well-being of both the operator and the equipment.</li><li>Maintenance and Calibration: P224 pumps are easy to maintain and calibrate, with clear documentation provided by us for routine upkeep and troubleshooting.</li><li>Versatility: P224 supports a wide range of solvents and mobile phases commonly used in chromatography, offering flexibility for various applications.</li><li>Data Logging and Connectivity: The capability to log service data enhances operation traceability and documentation.</li></ul><h3>TECHNICAL SPECIFICATION</h3><ul><li>Flow Rates: 0,1 ml/min – 25,00 ml/min with step 0.1 ml/min (semiprep)</li><li>Pressure: 30 MPa/4300 psi</li><li>Flow precision: &nbsp;&nbsp;&nbsp;&nbsp;± 0,2% RSD @ 1mL/min. and 7 Mpa</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: better than ± 0.5% @ 1mL/min. and 7 MPa</li><li>Remote control: USB</li><li>I/O connector: Start, Stop, Status, Error</li></ul>You can also visit this product on the <a target="_blank" rel="noopener noreferrer" href="https://watrex.com/obchod/chromatography/pumps/preparative-pumps/p224-pump-dual-head-stainless-steel/?utm_source=labrulez&amp;utm_medium=propagace&amp;utm_campaign=labrulez_produkty">Watrex website</a>.

Watrex Streamline™ Manual Injection Valve Kit

Steinless steel manual injector with integrated inlet port for Hamilton needle (0.7 mm OD), with “No-Flow-Interruption (NFI)” technology to prevent pressure pulse during valve rotation. 

Steinless steel manual injector with integrated inlet port for Hamilton needle (0.7 mm OD), with “No-Flow-Interruption (NFI)” technology to prevent pressure pulse during valve rotation.&nbsp;<blockquote>Price: 992<bdi>&nbsp;€ ex VAT</bdi></blockquote>It comes with the bracket, 20 ul loop (other volumes on request) and Hamilton type syringe.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Watrex_Streamline_Manual_Injection_Valve_Kit_965e688a66.jpg" alt="Watrex: Streamline™ Manual Injection Valve Kit" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Watrex_Streamline_Manual_Injection_Valve_Kit_965e688a66.jpg 208w," sizes="100vw" width="1024" height="768">You can also visit this product on the <a target="_blank" rel="noopener noreferrer" href="https://watrex.com/obchod/chromatography/sampling-devices/manual-injectors/streamline-manual-injection-valve-kit/?utm_source=labrulez&amp;utm_medium=propagace&amp;utm_campaign=labrulez_produkty">Watrex website</a>.

Watrex Streamline™ Manual Injection Valve Kit, PEEK

PEEK manual injector with integrated inlet port for Hamilton needle (0.7 mm OD), with “No-Flow-Interruption (NFI)” technology to prevent pressure pulse during valve rotation.

PEEK manual injector with integrated inlet port for Hamilton needle (0.7 mm OD), with “No-Flow-Interruption (NFI)” technology to prevent pressure pulse during valve rotation.<blockquote>Price: 1 100<bdi>&nbsp;€ ex VAT</bdi></blockquote>It comes with the bracket, 20 ul loop (other volumes on request) and Hamilton type syringe.You can also visit this product on the <a target="_blank" rel="noopener noreferrer" href="https://watrex.com/obchod/chromatography/sampling-devices/manual-injectors/streamline-manual-injection-valve-kit-2/?utm_source=labrulez&amp;utm_medium=propagace&amp;utm_campaign=labrulez_produkty">Watrex website</a>.<figure class="image"><img style="aspect-ratio:800/600;" src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Watrex_Streamline_Manual_Injection_Valve_Kit_PEEK_0b4aaf2ff2.jpg" alt="Watrex: Streamline™ Manual Injection Valve Kit, PEEK" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Watrex_Streamline_Manual_Injection_Valve_Kit_PEEK_0b4aaf2ff2.jpg 208w," sizes="100vw" width="800" height="600"></figure>

Watrex Streamline™ MIM Manual Injector Module

Streamline instrument module for manual sampling with both full and partially filled loop method. The MIM includes a six-port two position valve with a 20 µl loop and syringe port, housed in a standard Streamline cabinet.

Streamline instrument module for manual sampling with both full and partially filled loop method. The MIM includes a six-port two position valve with a 20 µl loop and syringe port, housed in a standard Streamline cabinet.<blockquote>Price: 1 510<bdi>&nbsp;€ ex VAT</bdi></blockquote>The valve is equipped with a position sensor to automatically synchronize injection with the start of data collection and with the feature. The valve architecture allows uninterrupted flow as the valve switches from LOAD to INJECT. The mobile phase continuously flows through both the rotor seal groove and the special passage until rotation stops.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Watrex_Streamline_MIM_Manual_Injector_Module_df092ebbaf.jpg" alt="Watrex: Streamline™ MIM Manual Injector Module" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Watrex_Streamline_MIM_Manual_Injector_Module_df092ebbaf.jpg 208w," sizes="100vw" width="1024" height="768">You can also visit this product on the <a target="_blank" rel="noopener noreferrer" href="https://watrex.com/obchod/chromatography/sampling-devices/manual-injectors/streamline-mim-manual-injector-module/?utm_source=labrulez&amp;utm_medium=propagace&amp;utm_campaign=labrulez_produkty">Watrex website</a>.

Watrex Streamline™ MIM Manual Injector Module, PEEK

Streamline instrument module for manual sampling with both full and partially filled loop method. The MIM includes a PEEK six-port two position valve with a 20 µl loop and syringe port, housed in a standard Streamline cabinet.

Streamline instrument module for manual sampling with both full and partially filled loop method. The MIM includes a PEEK six-port two position valve with a 20 µl loop and syringe port, housed in a standard Streamline cabinet.<blockquote>Price: 1 510<bdi>&nbsp;€ ex VAT</bdi></blockquote>The valve is equipped with a position sensor to automatically synchronize injection with the start of data collection and with the feature. The valve architecture allows uninterrupted flow as the valve switches from LOAD to INJECT. The mobile phase continuously flows through both the rotor seal groove and the special passage until rotation stops.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Watrex_Streamline_MIM_Manual_Injector_Module_df092ebbaf.jpg" alt="Watrex: Streamline™ MIM Manual Injector Module. PEEK" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Watrex_Streamline_MIM_Manual_Injector_Module_df092ebbaf.jpg 208w," sizes="100vw" width="1024" height="768">You can also visit this product on the <a target="_blank" rel="noopener noreferrer" href="https://watrex.com/obchod/chromatography/sampling-devices/manual-injectors/streamline-mim-manual-injector-module-peek/?utm_source=labrulez&amp;utm_medium=propagace&amp;utm_campaign=labrulez_produkty">Watrex website</a>.

Watrex Streamline™ HPLC AS1 Autosampler 

The AS1 autosampler with a sample capacity of 60 standard (12 x 32 mm) vials or 96 with a microtiter plate, is the smallest of the two autosamplers of the Streamline HPLC range.

The AS1 autosampler with a sample capacity of 60 standard (12 x 32 mm) vials or 96 with a microtiter plate, is the smallest of the two autosamplers of the Streamline HPLC range.<blockquote>Price: 7 100<bdi>&nbsp;€ ex VAT</bdi></blockquote>The small footprint of only 310 x 210 x 478 mm (HxWxD) in combination with excellent specifications and almost maintenance free mechanics makes this autosampler an ideal partner for automating not only Streamline HPLC systems but virtually any HPLC system that needs to be upgraded with an autosampler.&nbsp;A speciality of the AS1 autosampler is the double needle injection technique by which the outer needle or “air needle” pierces the vial septum before the sample needle enters the vial. This is a unique approach avoiding blocked injection needles and/or blocked injection valves. This allows the use of any type of vial septums and by which it adds to improved reliability of the chromatography system as a whole.You can also visit this product on the <a target="_blank" rel="noopener noreferrer" href="https://watrex.com/obchod/chromatography/sampling-devices/autosamplers/streamline-as1-autosampler/?utm_source=labrulez&amp;utm_medium=propagace&amp;utm_campaign=labrulez_produkty">Watrex website</a>.

Watrex Streamline™ HPLC AS2 Autosampler 

The AS2 autosampler with a sample capacity of 120 standard (12 x 32 mm) vials or 192 samples with microtiter plates. The excellent specifications and almost maintenance free mechanics makes this autosampler an ideal partner.

The AS2 autosampler with a sample capacity of 120 standard (12 x 32 mm) vials or 192 samples with microtiter plates. The excellent specifications and almost maintenance free mechanics makes this autosampler an ideal partner for automating not only Streamline HPLC systems but virtually any HPLC system that needs to be upgraded with an autosampler.<blockquote>Price: 7 097<bdi>&nbsp;€ ex VAT</bdi></blockquote>A speciality of the Streamline autosampler is the double needle injection technique by which the outer needle or “air needle” pierces the vial septum before the sample needle enters the vial. This is a unique approach avoiding blocked injection needles and/or blocked injection valves. This allows the use of any type of vial septums and by which it adds to improved reliability of the chromatography system as a whole.You can also visit this product on the <a target="_blank" rel="noopener noreferrer" href="https://watrex.com/obchod/chromatography/sampling-devices/autosamplers/streamline-as2-autosampler/?utm_source=labrulez&amp;utm_medium=propagace&amp;utm_campaign=labrulez_produkty">Watrex website</a>.

Products from category HPLC components - page 2

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