Thermo Scientific QuEChERS
All pictures shown are for illustration purpose only. Actual product may vary.
Thermo Scientific QuEChERS kits contain pre-packaged, ready-weighed salts, sorbents, and buffers to streamline your workflow and minimize the potential for error. The kits are available in several formats depending on your analytes of interest, sample matrix, and preferred QuEChERS method:
- Original 2003 Method (Anastassiades et al, 2003): developed for non-base-sensitive compounds, using sodium chloride to reduce polar interferences and enhance extraction.
- AOAC 2007.01 Method uses sodium acetate as a buffer instead of sodium chloride and is compatible with base-sensitive compounds.
- EN 15662 Method is like the AOAC method, but uses sodium chloride to minimize polar interferences, and sodium citrate dihydrate and disodium citrate sesquihydrate instead of sodium acetate.
- NY/T 1380-2007 Method is recommended by China Ministry of Agriculture for the QuEChERS Method sample preparation of 51 specific pesticide residues in fruits and vegetables with analysis by GC-MS.
Complete packages - including both extraction and clean-up kits - are available. Extraction-only and clean up-only kits are also offered to suit your laboratory’s sample preparation needs. These pre-packaged kits save time and money, make QuEChERS procedures easier and more convenient, and ensure quality to yield reproducible results and excellent recoveries for a wide variety of analytes.
Features
Purpose of the Chemicals
- MgSO4 removes residual water, and induces phase separation between water content in sample and acetonitrile layer
- NaCl removes residual water, and induces phase separation between water content in sample and acetonitrile layer
- NaOAc buffers the sample to stabilize pH
- Disodium hydrogencitrate sesquihydrate buffers the sample to stabilize pH
- Trisodium citrate dihydrate buffers the sample to stabilize pH
- PSA removes free fatty acids and other acidic co-extractives
- C18 removes fats, sterols, and other non-polar interferences from sample
- GCB removes pigment (not recommended for use with planar pesticides)
