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Merck

55227-U

Supelco

Supel QuE QuEChERS tube

Citrate Extraction Tube, pk of 50, suitable for EN 15662

Synonym(s):

QuEChERS

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50 EA
1.610,00 kr.

1.610,00 kr.


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50 EA
1.610,00 kr.

About This Item

UNSPSC Code:
41115712
NACRES:
NB.21

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1.610,00 kr.


Please contact Customer Service for Availability

Request a Bulk OrderRequest a Sample
Technical Service
Need help? Our team of experienced scientists is here for you.
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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-U55294-U55173-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

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.

Application

Supel QuE citrate tube is used for the determination of pesticide residues on vegetables using various analytical techniques.[1][2]

Suitability

Suitable for extracting ~10 g food/agricultural sample. The citrate is to buffer the extraction to pH 5.0 - 5.5. At this pH, most acid and base labile pesticides are stable.

Legal Information

Supel is a trademark of Sigma-Aldrich Co. LLC

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


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Questions

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  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. 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

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. 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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