QuEChERS Made
Even Easier

• New free-flowing salts in slim packs make extraction a snap.
• Complete line of easy-to-use QuEChERS products, reference standards, and accessories.
• Follow up sample prep with a wide range of analytical columns for both LC and GC.

Keep your workflow running smoothly with Q-sep extraction salts from Restek!

For years, the QuEChERS approach to sample preparation has been making the lives of food safety scientists easier. Gone are the days of time-consuming, solvent-intensive extraction techniques and multiple solid phase extraction cartridge cleanup steps! Research published by the U.S. Department of Agriculture Easter Regional Research Center in Wyndmoor, PA, [1] introduced to the world QuEChERS—a method that is Quick, Easy, Cheap, Effective, Rugged, and Safe.

With QuEChERS, a homogenized sample undergoes a quick extraction step where the analytes are driven into an organic solvent by the partitioning power of a blend of salts. After extraction, the sample is cleaned up through the use of a dispersive solid phase extraction (dSPE) step that is also quick and easy to perform. This simple, two-stage process offers significant savings in time, materials, and effort, making QuEChERS sample preparation faster and easier than other approaches.

• Columns
• Reference Standards
• Sample Handling
• Supplies & Accessories

Columns

Raptor ARC-18 LC Columns (USP L1) Ideal for high-throughput LC-MS/MS applications with minimal sample preparation. Well-balanced retention profile for better detection and integration of large, multiclass analyte lists. Sterically protected to endure low-pH mobile phases without sacrificing retention or peak quality. Part of Restek’s Raptor LC column line featuring 1.8, 2.7, and 5 µm SPP core-shell silica.

Rxi-5Sil MS Columns (fused silica) low-polarity phase; Crossbond 1,4-bis(dimethylsiloxy)phenylene dimethyl polysiloxane Engineered to be a low-bleed GC-MS column. Excellent inertness for active compounds. General-purpose columns—ideal for GC-MS analysis of semivolatiles, polycyclic aromatic compounds, chlorinated hydrocarbons, phthalates, phenols, amines, organochlorine pesticides, organophosphorus pesticides, drugs, solvent impurities, and hydrocarbons. Temperature range: -60 °C to 350 °C.

Reference Standards

QuEChERS Performance Standards Kit Designed for use in all QuEChERS methods for pesticides in fruits and vegetables, including the original unbuffered method, AOAC 2007.01, and EN 15662. Kit contains organochlorine, organonitrogen, organophosphorus, and carbamate pesticides commonly used on fruits and vegetables. Volatile, polar, active, base-sensitive, and nonvolatile compounds are included to allow comprehensive evaluation of QuEChERS extraction and cleanup efficiencies, and optimization of GC and LC instrumental conditions. Ideal for initial method evaluations and ongoing method performance validations. Analytes are divided into three ampuls based on compatibility for maximum stability and shelf life.* Precise formulations improve data quality and operational efficiency; spend more time running samples and less time sourcing and preparing standards. Quantitatively analyzed to confirm the composition and stability of each mixture. *When combining compounds with different functionalities, chemical stability can be an issue. The analytes in this kit are separated into three mixes to ensure maximum long-term storage stability. For analysis, a fresh working standard should be prepared by combining the three kit mixes in a 1:1:1 ratio to prepare a 100 µg/mL working standard solution. Once blended, Restek does not recommend storing working standards or subsequent dilutions for future use. Contains 1 mL each of these mixtures. 31153: QuEChERS Performance Standard A 31154: QuEChERS Performance Standard B 31155: QuEChERS Performance Standard C

QuEChERS Internal Standards and Quality Control Standards Single and multiple component standards as specified in EN Method 15662. Support for GC and HPLC with MS, MS/MS, and selective detectors. Ready to use for QuEChERS extractions—no dilutions necessary.

LC Multiresidue Pesticide Kit Accurately detect and quantify pesticides of global food safety concern in a wide range of fruits, vegetables, and other commodities by LC-MS/MS. Full kit contains 204 compounds of interest, covering many LC-determined pesticides listed by government agencies; individual ampuls also sold separately.

GC Multiresidue Pesticide Kit Accurately identify and quantify pesticide residues by GC-MS/MS in fruits, vegetables, botanicals, and herbals such as tea, ginseng, ginger, echinacea, and dietary supplements. Comprehensive 203-compound kit covers food safety lists by the FDA, USDA, and other global governmental agencies; individual ampuls also sold separately.

Sample Handling

Q-sep QuEChERS Extraction Salts Free-flowing salts transfer easily and completely. Easy-open packets eliminate the need for a second empty tube for salt transfer. Convenient slim packets fit perfectly into tubes to prevent spills. Ready-to-use tubes, no glassware required. Pre-weighed, ultra-pure extraction salts. Ideal for original unbuffered, AOAC (2007.01), and European (EN 15662) QuEChERS methods.

Q-sep QuEChERS dSPE Tubes for Extract Cleanup Fast, Simple Sample Prep for Multiresidue Pesticide Analysis Packaged in foil subpacks of 10 for enhanced protection and storage stability. Ready-to-use tubes, no glassware required. Pre-weighed, ultra-pure sorbents. Support original unbuffered, AOAC (2007.01), European (EN 15662), and mini-multiresidue QuEChERS methods.

Q-sep 3000 Centrifuge for QuEChERS Supports 50 mL, 15 mL, and 2 mL centrifuge tubes. Small footprint requires less bench space. Safe and reliable—UL, CSA, and CE approved; 1-year warranty.

Q-sep Bottle Top Solvent Dispenser Adjustment knob offers 56 output volume settings from 2.5 mL to 30 mL per stroke (0.5 mL increments)—ideal for QuEChERS methods! Base features 30 mm threads and includes four adaptors (25 mm, 28 mm, 38 mm, and 45 mm). Individually calibrated in accordance with ISO 8655 standards (certificate included) and can also be recalibrated by the user. PTFE, glass, and polypropylene construction for excellent chemical compatibility and 100% autoclavability. Integral safety discharge reduces risk of accidental dispensing, and nozzle cap prevents dripping. Easy to disassemble for cleaning and servicing.

Empty Centrifuge Tubes Polypropylene

Empty Centrifuge Tubes, FEP Sturdy, easy-to-clean FEP (fluorinated ethylene propylene)-lined tubes last indefinitely under normal usage conditions—and cost 50% less!

Q-sep Tube Racks Available for 2 mL, 15 mL, and 50 mL tubes. Alphanumerical grid reference on top tier for easy identification of samples. Easy to assemble; simply fold and snap together securely.

Supplies & Accessories

Topaz 4.0 mm ID Single Taper Inlet Liner for Agilent GCs equipped with split/splitless inlets Topaz GC inlet liners feature revolutionary technology and inertness to deliver you the next level of True Blue Performance: Deactivation—unbelievably low breakdown for accurate and precise low-level GC analyses. Reproducibility—unbeatable manufacturing controls and QC testing for superior reliability across compound classes. Productivity—unparalleled cleanliness for maximized GC uptime and lab throughput. 100% Satisfaction—if a liner doesn't perform to your expectations, we will replace it or credit your account.* Patented