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material
polypropylene tube
Quality Level
product line
Supel™
composition
magnesium sulfate, 4 g
sodium chloride, 1 g
packaging
pk of 50
technique(s)
QuEChERS: suitable
centrifuge tube volume
15 mL
application(s)
food and beverages
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Related Categories
1 of 4
This Item | 55295-U | 55237-U | 55228-U |
|---|---|---|---|
| product line Supel™ | product line Supel™ | product line - | product line Supel™ |
| composition magnesium sulfate, 4 g | composition magnesium sulfate, 6 g , sodium chloride, 1 1/2 g | composition magnesium sulfate, 4 g , sodium bicarbonate, 5 g (Cat. No. S6014), sodium chloride, 1 g (Cat No. S7653), sodium citrate dibasic sesquihydrate, 0.5 g (Cat. No. 71635), sodium citrate tribasic dihydrate, 1 g (Cat. No. S4641) | composition magnesium sulfate, 900 mg , Supelclean™ |
| packaging pk of 50 | packaging pk of 50 | packaging pk of 50 | packaging pk of 50 |
| technique(s) QuEChERS: suitable | technique(s) QuEChERS: suitable | technique(s) QuEChERS: suitable | technique(s) QuEChERS: suitable |
| centrifuge tube volume 15 mL | centrifuge tube volume 15 mL | centrifuge tube volume 15 mL | centrifuge tube volume 15 mL , Greiner Cat. No. 163270 |
General description
Using the QuEChERS method, food/agricultural samples are first extracted with an aqueous miscible solvent (e.g., acetonitrile) in the presence of high amounts of salts (e.g., sodium chloride and magnesium sulfate) and/or buffering agents (e.g. citrate) to induce liquid phase separation and stabilize acid and base labile pesticides, respectively. Upon shaking and centrifugation, an aliquot of the organic phase is subjected to further cleanup using SPE. Unlike traditional methods using SPE tubes, in dispersive SPE, cleanup is facilitated by mixing bulk amounts of SPE (e.g., Supelclean PSA, ENVI-Carb, and/or Discovery DSC-18) with the extract. After sample cleanup, the mixture is centrifuged and the resulting supernatant can either be analyzed directly or can be subjected to minor further treatment before analysis.
Supelco carries a line of vials and centrifuge tubes containing pre-determined amounts of salts and SPE sorbents to support the most common method configurations used today.
Application
Legal Information
Storage Class Code
13 - Non Combustible Solids
WGK
WGK 1
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
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QuEChERS is a ‘Quick, Easy, Cheap, Effective, Rugged and Safe’ sample cleanup method used to prepare food and agricultural samples for pesticides analysis. QuEChERS is based on the Solid Phase Extraction (SPE) technique of sample preparation.
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