If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
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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Product Name
Supel™ QuE, Citrate Extraction Tube, pk of 50, suitable for EN 15662
material
polypropylene tube
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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This Item | 55295-U | 55294-U | 55173-U |
|---|---|---|---|
| material polypropylene tube | material polypropylene tube | material polypropylene tube | material - |
| agency suitable for EN 15662 | agency suitable for EPA ACB B21-02, suitable for EPA ACB B23-05b | agency - | agency suitable for BS EN 15662:2008 |
| product line Supel™ | product line Supel™ | product line Supel™ | product line - |
| composition magnesium sulfate, 4 g | composition magnesium sulfate, 6 g , sodium chloride, 1 1/2 g | composition magnesium sulfate, 4 g , sodium chloride, 1 g | composition Discovery® C18, 25 mg , magnesium sulfate, 150 mg , Supelclean™ PSA, 25 mg |
| packaging pk of 50 | packaging pk of 50 | packaging pk of 50 | packaging pack of 100 |
| technique(s) QuEChERS: suitable | technique(s) QuEChERS: suitable | technique(s) QuEChERS: suitable | technique(s) QuEChERS: suitable |
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
Storage Class Code
13 - Non Combustible Solids
WGK
WGK 1
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
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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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