Innovative Chromatography Products
www.restek.it
www.restek.it


Pharmaceutical Solutions
![]() Raptor Biphenyl LC Columns (USP L11)
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![]() Pinnacle DB HPLC & UHPLC Columns
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![]() Rxi Capillary GC ColumnsLeverage the outstanding inertness, low bleed, and high reproducibility of Rxi GC Columns with 3-in-1 technology to gain:
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![]() Certified Autosampler Vial KitsCertified 2.0 mL Screw-Thread Vials
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![]() Syringe Filters with Luer Lock Inlet
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![]() USP Residual Solvent Standards
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![]() Lampsfor Agilent HPLC Systems |
![]() Lampsfor Waters Detectors |
![]() ![]() LC/MS and GC/MS Analysis of Potential Genotoxic Impurities in Active Pharmaceutical Ingredients |
![]() The Analysis of Residual Solvents—Implementing USP <467> |
![]() Using Phenyl Column Chemistry to Optimize Reversed Phase SeparationsNarrated by Rick Lake, Pharmaceutical Market Development Manager. |
![]() Troubleshooting the Acetonitrile Shortage—Strategies for Today and TomorrowNarrated by Rick Lake, Pharmaceutical Market Development Manager. |
![]() USLC Columns Put the Right Tools in Your LC Method Development Toolbox - Understanding Selectivity in Reversed Phase Separations – A Simplified Approach to HPLC and UHPLC Column SelectionColumn selectivity has the most significant influence on chromatographic peak separation, or resolution, so choosing the right column can greatly speed up HPLC and UHPLC method development. In this article, we discuss column choice and identify a set of just 4 stationary phasesRestek’s USLC column setthat encompasses the widest range of reversed phase selectivity available today. |
![]() Two Options for Analyzing Potential Genotoxic Impurities in Active Pharmaceutical IngredientsTwo options for the analysis of PGIs in API have been developed by Merck and Restek to meet different laboratory needs. The first option is a fast method for the analysis of sulfonate esters on the Rxi®-5Sil MS column. The second option is a comprehensive method for the analysis of both sulfonate esters and alkyl halides on the Rtx®-200 column. Both methods require very little sample preparation, which helps increase laboratory productivity. |
![]() Pesticides in Dietary Supplements: - Advantages of QuEChERS vs. PAM 303Restek has developed the first QuEChERS-based method for determining pesticide residues in dietary supplements. This simple, cost-effective procedure reduces matrix interferences as well as sample prep variation among technicians. |
![]() Determining Pesticides in Dietary Supplements with QuEChERS Extraction, Cartridge SPE, and GCxGC-TOFMSThe novel approach used here combines QuEChERS extraction, cartridge SPE cleanup, and GCxGC-TOFMS analysis, resulting in good recoveries for a wide range of pesticides in dietary supplements. Matrices include dandelion root, sage, and a multi-herb finished product. |
![]() USLC Columns: Choose Columns Fast. Develop Methods Faster.Restek USLC columns offer the widest range of selectivity available and are an integral part of successful method development. Ideal for column switching systems, these columns provide orthogonal separations to create optimal resolution and robust methods—all in a 4-column set. |
![]() USLC Column Selection & Mobile Phase Adjustment GuideUSLC columns and this guide will help you easily choose the right stationary phase to target nearly any analyte in reversed phase or HILIC method development. It will also help you adjust your mobile phase to further improve results without guesswork or wasted time. |
![]() Rxi-624Sil MS Columns—Exceptionally Inert, Low Bleed Columns for Volatiles AnalysisAnalyze volatile compounds and polar analytes with greater confidence using Rxi-624Sil MS columns. Optimized selectivity, higher inertness, and lower bleed result in reliable separations and accurate, trace-level determinations. Includes environmental and pharmaceutical applications. |
![]() Excellent LC-MS Separation of Penicillins and Cephalosporins Using Ultra IBD ColumnsUnlike C18 columns, Ultra IBD (intrinsically base deactivated) columns can interact in normal phase mode with analytes that possess charged functional groups, providing greater versatility for LC-MS analyses. Excellent peak shape in either normal phase mode or reversed phase mode increases sensitivity and improves quantification. The 4-page note shows example analyses of penicillins and cephalosporins. |
![]() NEW! Rx-1301Sil MS GC ColumnsThe new Rxi-1301Sil MS column is ideal for the analysis of multiple compound classes across a range of polarities and volatilities. With its cyano-based selectivity and high thermal stability, it is the best 1301-type column for robust MS analyses. |
![]() Custom Residual Solvents MixesSave time and money—let Restek custom blend reference standards specifically for your residual solvent testing needs! |
![]() Residual Solvent Analysis: Implementing USP <467>This 12-page reference includes a of headspace fundamentals, the revised USP <467> method (July, 2008), chromatography for Procedures A, B, and C, and technical tips for optimization. Guidance on fast, effect method development is given. |