
Restek Q-sep™ QuEChERS Products
Q-sep™ QuEChERS Extraction SaltsFast, Simple Sample Prep for Multi-Residue Pesticide Analysis
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Q-sep™ 3000 Centrifugefor QuEChERS
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Q-sep™ QuEChERS dSPE Tubes for Extract Clean-UpFast, Simple Sample Prep for Multi-Residue Pesticide Analysis
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Q-sep™ Tube Racks
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![]() QuEChERS Internal Standards and Quality Control Standards
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Rxi®-5Sil MS Columns (fused silica)(low polarity Crossbond® silarylene phase; similar to 5% phenyl/95% dimethyl polysiloxane)
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Ultra Aqueous C18 Columns (USP L1)particle size: 3µm or 5µm, spherical pore size: 100Å carbon load: 15% endcap: no pH range: 2.5 to 8 temperature limit: 80°C Highly retentive and selective for reversed phase separations of polar analytes. Highly base-deactivated. Compatible with highly aqueous (up to 100%) mobile phases. Part of the Restek USLC™ column set, which offers the widest range of reversed phase selectivity available! |
![]() 5.0mm ID Straight Inlet LinerFor Agilent GCs equipped with split/splitless inlets |
![]() 5.0mm ID Single Gooseneck Inlet LinerFor Agilent GCs equipped with split/splitless inlets |
Introduction to QuEChERSJack Cochran, Director of New Business and Technology at Restek, gives a brief overview of the QuEChERS process, and how it can simplify your sample preparation workflow. |
Sample Preparation of Cannabinoids in Urine Using the QuEChERS Method and dSPE CleanupThis webinar introduces QuEChERS and dSPE and discusses their application to sample prep for GC/MS analysis of cannabinoids in urine. Attendees will learn how to increase sample throughput with this simple approach. Narrated by Amanda Rigdon, Pharmaceutical Innovations Chemist. |
Analysis of Veterinary Drug Residues using a Unique HPLC Biphenyl Stationary PhaseAnalysis of veterinary drug residues in milk using a QuEChERS approach and Biphenyl column is discussed. Better retention is achieved, compared to C18 or phenyl phases, improving separation of analytes and matrix components. Narrated by Julie Kowalski, Foods, Flavors & Fragrances Applications Chemist. Length: 24 minutes |
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![]() Comparing Pesticide Residues in Amish and Commercially Grown Strawberries and Spinach Using QuEChERS, Various dSPE Sorbents, and GC-TOFMSQuEChERS extraction, dSPE cleanup, and GC-TOFMS analysis were used to assess pesticide residue levels in strawberry and spinach from both commercial and Amish growers. Various dSPE sorbent products were compared to determine which were most effective. |
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. (PDF - 394kB) |
QuEChERS Methodology: Original Unbuffered Method Instruction SheetInstruction Sheet for QuEChERS Methodology: Original Unbuffered Method. (PDF - 225kB) |
QuEChERS Products: Fast, Simple Sample Prep for Multiresidue Pesticide AnalysisLearn how to use the QuEChERS approach to perform faster, easier sample preparation and cleanup for multiresidue pesticide analysis. Q-sep™ QuEChERS products save time, money, and materials compared to modified Luke methods. (PDF - 719kB) |
Developing New Methods for Pesticides in Dietary SupplementsQuEChERS is a simple, effective approach to sample prep that can be applied to the analysis of pesticides in dietary supplements. Here we demonstrate a QuEChERS, cSPE, GC-TOFMS procedure that results in good recoveries for a wide range of pesticides in dandelion root. (PDF - 258kB) |
Fast, Simple QuEChERS Extraction and Cleanup of Pesticide Residue SamplesQuEChERS dSPE methods simplify extract cleanup, reduce material costs, and improve sample throughput. Here we demonstrate the effectiveness of QuEChERS sample cleanup using a multiresidue analysis of pesticides on strawberries. (PDF - 158kB) |
Fast Screening of Recalled Tylenol® for Tribromoanisole and Related AdulterantsThe recent recall of Tylenol® pain reliever and other related products highlights the need for simple, quick sample preparation and a comprehensive analytical method for adulterants in consumer products. The rush to examine a multitude of samples in a short period of time is a common scenario for potential recalls, especially when a contaminant is found in a given product and rapid determinations need to be made to assess how widespread the problem may be. (PDF - 288kB) |
How Column Inertness Improves the Chromatography of Basic CompoundsNot all column deactivations are appropriate for analyzing basic compounds. Here we demonstrate the effect of column inertness on peak shape, and discuss its role in improving method accuracy, sensitivity, and development time. (PDF - 227kB) |
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