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About The History And Development Of The QuEChERS Method

Due to the variety of targets, large structural differences, and low target content, the detection of pesticide residue method requires being accurate, rapid, sensitive, simple and low cost. The QuEChERS method is more and more widely used in pesticide residue detection, as it is green and quick. The method was developed by the National Association of Analytical Chemists in January 2007.

The US Department of Agriculture scientists first introduced it in 2003. Researched by the US Department of Agriculture's Agricultural Research Service Center, the material is not placed in the SPF column but directly added to the sample. After a thorough validation of more than 200 pesticides, the improved method was officially adopted in January 2007 as the official method of the American Association of Analytical Chemists.

Location : Xi'an City , Shaanxi Province, P.R.China, 710077 Xi'an,
Contact : Bruce Lu, +86 29 89284429

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Turkey 42050 Construction goods
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Friday, November 21, 2014

Quantity : 1 UNIT - Price : 1,5 USD

We have been manufacturing PAINT ROLLERS for 10 years in our factories in Konya and Istanbul. Our PAINT ROLLERS are categorized in 3 types depending on application that all can be used for both Water Based Paints and Solvent Based Paints : • PAINT ROLLER for EXTERIOR FACADES. Lengths ...

TURKON EXPORT LTD.

  • 42050 - KONYA
  • +905353265862
Taiwan 429 B2B Services
Eumach Co., Ltd.

Tuesday, November 25, 2025

<< Stable Operations, Continued Growth >> 5 Axis Machining Center-Eumach Co., Ltd. Eumach Co., Ltd. is a fresh business of machine tool industry, and concentrates on manufacturing 5 axis machining center, vertical horizontal machining center, universal milling machine...

Eumach Co., Ltd.

  • 429 - Taichung City
  • +886 4 2581 0031
Morocco 20000 Construction goods
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Saturday, October 03, 2015

Price : 57 Euros / tonne (FO

Dear, We contact you because your company is specialized in the import and distribution of building materials. We want to propose you a competitive commercial offer. We are the Compagnie Marocaine de Plâtre et d'Enduit, company specialized in the manufacture et trading of plaster...

CMPE

  • 20000 - Maroc
  • 00212522402272
  • 00212696917026