Everything else / Bulk

A Brief Description of QuEChERS

QuEChERS is a pretreatment that has the characteristics of Quick、Easy、Cheap、Effective、Rugged and Safe, which is the reason why it is becoming more and more popular in the new testing methods. It was developed by Professor Anastassiades in 2003, which was used in agricultural testing at first.

The principle of QuEChERS is similar with the HPLC and SPE. QuEChERS purifies the substance because the interaction between the adsorptive stuff and the impurities of substrates can help absorb the impurities. Detailedly, after the homogenized samples are extracted by acetonitrile and the salting-out method, the disrupters of the samples combined with the PSA or some other adsorptions, such as organic acid and aliphatic acid. And then the impurities are removed by centrifugation. Therefore, the quality determines the test results.

QuEChERS is widely used in many fields as a testing method, especially in Pesticide Residues Determinations. We can use it to purify substances in numerous field as long as the percent recovery of the samples is in the allowable ranges and the substrates fit the needs of testing.

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

Good deal: buying from seller

Visit our guide for a secure transaction! Under no circumstances Algomtl can be held responsible for the content of the ads published. Only the sellers and buyers responsability is involved in case of dispute.
We invite you to read our terms of use. You can also visit our FAQ section and see our information section on the risks associated with counterfeiting.
This page is about importers and exporters of
A Brief Description of QuEChERS

Search in a category : Everything else / Bulk
Search in a category :
quechers, description
France 59590 B2B Services
DIN BELLOWS GLOBE VALVE

Wednesday, September 14, 2016

Quantity : 5000 - Price : 50,00 €

Bellows Seal Stop Valves(Straight-Through Type) DIN Bellows Seal Stop Valve DIN Bellows Globe Valve DIN Faltenbalgventil Durchgangsform DIN Válvulas de fuelle DIN ventil uzavírací s vlnovcem přímý DIN Standard seteventil med belg (Rett løp modell) DIN Standardında Metal Körüklü...

ETM Armaturen

  • 59590 - Henri Durre
  • 86 577 67953935
Thailand 5000 Food
High Premium Quality Cardamon

Saturday, February 20, 2016

Quantity : 1000 MT PE - Price : 1200 usd per mt CIF

Khun Jack Partnership Ltd, is a reputed manufacturer, exporter and supplier of high quality aromatic spices and other agro based products originated from Vietnam. We basically deal in a range of products that includes Cardamom, Cassia (Cinnamom), Star Anise, Pepper, Cashew Nut, Ginger...

Khun Jack Partnership Ltd

  • 5000 - Chaing Mai
  • +66 9 68 75 20 43
Thailand 50000 Food
FRESH LIVE FROZEN LOBSTER P ORNATUS - ALL SIZES - FROZEN BASA FILLLET - PANGASIUS...

Thursday, February 11, 2016

Price : 12 USD / KG

Specifications live lobsters We also have: 1. Live slipper lobsters 2. Live flower lobsters 3. Live tiger prawns 4. Live giant freshwater shrimps 5. Live black grouper 6. Live tiger grouper 7. Live giant grouper 8. Live red grouper 9. Live red grouper (tong sing) 10. Live sea eels 11...

KHUN JACK PARTNERSHIP LIMITED

  • 50000 - CHIANG MAI
  • +66 9 56 19 49 81