Glyphosate and Glufosinate-Ammonium CRMs Certified by qNMR Now Available
Several new organic certified reference materials added
22 Mar 2016
TraceCERT® organic neat CRMs (certified reference materials) are developed and manufactured at the Sigma-Aldrich site in Buchs, Switzerland, under ISO/IEC 17025 and ISO Guide 34 double accreditation. To date, more than 200 of these high quality products have become available, providing analytical customers with traceable certified reference materials of the most relevant analytes for food, cosmetics and environmental testing.
The main characteristics of organic TraceCERT certified reference materials are:
- Certified content by high performance quantitative NMR (HP-qNMR)
- Compliant to ISO/IEC 17025 and ISO Guide 34
- Superior level of accuracy, calculated uncertainties, and lot-specific values
- Traceability to NIST SRM
- Comprehensive documentation delivered with the product (certification according to ISO Guide 31)
The use of quantitative NMR (qNMR) as a relative primary analytical method using internal standards, which are traceable to NIST SRM, enables Sigma-Aldrich to establish traceable, quantitative values for almost every organic compound. Because the values of the integrals of the proton signals are not affected by the chemical structure, qNMR allows quantitative comparison between different organic molecules, which is not possible with most other analytical techniques.
New products are continually added to the range. The most recent product additions include Glyphosate and Glufosinate-ammonium, two of the most widely used herbicides. The mode of action of both of these organophosphorus herbicides is the inhibition of an enzyme of the amino acid biosynthesis in plants without affecting the metabolisms of humans or animals. Also among the new products is 4,4’-Diaminodiphenylmethane (MDA), a chemical used in the process of polyurethane production and which has been added to the “substances of very high concern” (SVHC) list of the European Chemicals Agency (ECHA) due to its suspected carcinogenicity.
Additional new products include dyes (Leucomalachite Green), preservatives (Butylated hydroxyanisole, Diisopropyl phthalate) or flavors (Isobutyric acid) among others, which reflects the broad range of analytes that are covered by the organic TraceCERT CRMs.
