55284-U
Supel™ QuE QuEChERS tube
Z-Sep/C18 Tube, centrifuge tube volume 2 mL, pack of 100
Synonym(s):
QuEChERS
About This Item
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product name
Supel™ QuE, Z-Sep/C18 Tube, centrifuge tube volume 2 mL, pack of 100
Quality Level
composition
Discovery® DSC-18, 50 mg
Z-Sep, 20 mg
packaging
pack of 100
technique(s)
QuEChERS: suitable
centrifuge tube volume
2 mL
application(s)
food and beverages
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General description
Z-Sep/C18 is recommended for cleanup of samples containing less than 15% fat.
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
Storage Class Code
11 - Combustible Solids
WGK
WGK 3
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
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Articles
The comparison of Supel™ QuE Z-Sep/C18, PSA/C18, and PSA QuEChERS sorbents, in terms of color removal and analyte recovery, is described for the cleanup of oranges prior to pesticide analysis.
Chromatograms
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