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For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf
55227-U
Supel™ QuE QuEChERS tube
Citrate Extraction Tube, pk of 50, suitable for EN 15662
Synonym(s):
QuEChERS
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About This Item
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Product Name
Supel™ QuE, Citrate Extraction Tube, pk of 50, suitable for EN 15662
material
polypropylene tube
Quality Level
agency
suitable for EN 15662
product line
Supel™
composition
magnesium sulfate, 4 g
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)
packaging
pk of 50
technique(s)
QuEChERS: suitable
centrifuge tube volume
15 mL
application(s)
food and beverages
separation technique
ion exchange
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Related Categories
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
Suitability
Legal Information
Application
required but not provided
Storage Class
13 - Non Combustible Solids
wgk_germany
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
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Articles
Rapid & accurate analysis of 208 pesticides and their metabolites in a fruit sample using Supel™ QuE QuEChERS mixes for sample preparation and GC-MS/MS.
Pesticide residue analysis of 331 pesticides and 44 metabolites in cabbage samples using Supel™ QuE QuEChERS mixes and Purospher® STAR RP-18e column.
Pistachios 45% fat complicates pesticide analysis. But Z-Sep+ sorbent cleanup after QuEChERS extraction can reduce background for reliable results.
Dual-layer cartridge achieves efficient SPE clean-up for challenging pesticide residue testing in turmeric and spices.
Protocols
Normal-phase SPE separates analytes based on polar interaction with sorbents in diverse sample matrices.
Related Content
QuEChERS method simplifies sample cleanup for pesticides analysis in food and agricultural samples.
Solid phase extraction purifies samples for chromatographic analysis, improving data quality and protecting analytical columns.
Chromatograms
application for HPLCapplication for HPLC, application for SPE-
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How is shipping temperature determined? And how is it related to the product storage temperature?
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Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf
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