roQ QuEChERS Kits
roQ QuEChERS kits make sample preparation easy. roQ QuEChERS kits eliminate common problems seen with other QuEChERS kits by incorporating features such as trays to hold centrifuge tubes, easy pour salt packets, and stand-alone centrifuge tubes making the removal of unwanted interferences such as organic acids, lipids, pigments, sugars, and more.
Don't settle for any QuEChERS kit…roQ exemplifies Quick, Easy, Cheap, Effective, Rugged and Safe for multiresidue pesticide clean-up in conjunction with AOAC 2007.01 and EN 15662 Methods.
A Simple 2-Step Method
Step 1: Extraction
Pesticides and analytes of interest must first be extracted from the sample. This process relies on the combination of organic solvent and various salts to partition the analytes from samples into an organic layer (typically acetonitrile).
Step 2: Dispersive SPE (dSPE)
An aliquot of the organic layer from the extraction step is subjected to further clean up by dispersive SPE. This step selectively removes unwanted interferences such as lipids and pigments, using the QuEChERS dispersive kit.
Method Recommendations for roQ QuEChERS Extraction
Step 1: Extraction
| AOAC | ORIGINAL | EN |
|---|---|---|
| AOAC 2007.01 Method 6.0 g MgSO4, 1.5 g NaOAc KS0-8911 |
Non-Buffered Method 4.0 g MgSO4, 1.0 g NaCl KS0-8910 6.0 g MgSO4, 1.5 g NaCl KS0-8912 |
EN 15662 Method 4.0 g MgSO4, 1.0 g NaCl, 1.0 g SCTD, 0.5 g SCDS KS0-8909 |
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*All roQ Extraction kits contain fifty easy-pour salt packets and fifty 50 mL stand-alone centrifuge tubes.
Step 2: Clean Up/dSPE**
| AOAC 2007.01 | EN 15662 | |||
|---|---|---|---|---|
| 1 mL | 8 mL | 1 mL | 6mL | |
General |
150 mg MgSO4, 50 mg PSA KS0-9511 |
1200 mg MgSO4, 400 mg PSA KS0-9515 |
150 mg MgSO4, 25 mg PSA KS0-9503 |
900 mg MgSO4, 150 mg PSA KS0-9507 |
Fats and Waxes |
150 mg MgSO4, 50 mg PSA 50 mg C18E KS0-9512 |
1200 mg MgSO4, 400 mg PSA KS0-9516 |
150 mg MgSO4, 25 mg PSA KS0-9504 |
900 mg MgSO4, 150 mg PSA KS0-9508 |
Pigmented |
150 mg MgSO4 50 mg PSA 50 mg GCB KS0-9513 |
1200 mg MgSO4, 400 mg PSA 400 mg GCB KS0-9517 |
150 mg MgSO4 25 mg PSA 2.5 mg GCB KS0-9505 |
900 mg MgSO4 150 mg PSA 15 mg GCB KS0-9509 |
Highly Pigmented |
– | – | 150 mg MgSO4 25 mg PSA 7.5 mg GCB KS0-9506 |
900 mg MgSO4 150 mg PSA 45 mg GCB KS0-9510 |
Pigments and Fats |
150 mg MgSO4 50 mg PSA 50 mg GCB 50 mg C18E KS0-9514 |
1200 mg MgSO4 400 mg PSA 400 mg GCB 400 mg C18E KS0-9518 |
– | – |
**All roQ dSPE kits contain pre-weighed sorbents/salts inside 2 mL or 15 mL centrifuge tubes.
