Merck
All Photos(1)

55227-U

Supelco

Supel QuE

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

Synonym(s):
QuEChERS
NACRES:
NB.21

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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material

polypropylene tube

material

-

material

polypropylene tube

material

-

agency

suitable for EN 15662

agency

AOAC® 2007.01

agency

-

agency

-

product line

Supel

product line

-

product line

Supel

product line

-

composition

magnesium sulfate, 4 g

composition

magnesium sulfate, 150 mg , Supelclean PSA, 50 mg

composition

magnesium sulfate, 150 mg , Supelclean ENVI-Carb Y, 10 mg , Supelclean PSA, 50 mg , Z-Sep+, 60 mg

composition

Z-Sep, 75 mg

packaging

pk of 50

packaging

pack of 100

packaging

pack of 100 ea

packaging

pack of 100 ea

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.

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

Certificate of Analysis

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Origin

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Product Information Sheet

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