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Supelco

Supel QuE

Non-Buffered Tube 2, pk of 50, suitable for PFAS testing

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Synonym(s):
QuEChERS
NACRES:
NB.21

material

polypropylene tube

Quality Level

Agency

suitable for EPA ACB B21-02
suitable for EPA ACB B23-05b

reg. compliance

suitable for FDA C-010.02

product line

Supel

composition

magnesium sulfate, 6 g
sodium chloride, 1 1/2 g

packaging

pk of 50

technique(s)

QuEChERS: suitable

centrifuge tube volume

15 mL

application(s)

food and beverages

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General description

Dispersive SPE (dSPE), often referred to as the "QuEChERS" method (Quick, Easy, Cheap, Effective, Rugged, and Safe), is modern sample prep technique that is becoming increasingly popular in the area of multi-residue pesticide analysis in food and agricultural products.

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.

Legal Information

Supel is a trademark of Sigma-Aldrich Co. LLC

Storage Class Code

11 - Combustible Solids

WGK

WGK 1


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