Merck, CRM06772-100MG, Chlorobromouron

General description
This certified reference material (CRM) is produced and certified in accordance with ISO/IEC 17025 and ISO 17034. This CRM is traceable to primary material from an NMI, e.g. NIST or NMIJ.
Certified content by quantitative NMR incl. uncertainty and expiry date are given on the certificate.
Download your certificate at: http://www.sigma-aldrich.com
Chlorbromouron is an obsolete systemic phenylurea herbicide used for pre- and post- emergence control of annual grasses (e.g. foxtail) and broad leafed weeds (e.g. chickweed) on a variety of crops. It inhibits photosynthesis by interfering with the electron transfer in photosystem II. As per the commission regulation no 1107/2009, repealing the council directive 91/414/EEC, chlorobromouron is not approved for use in the European Union. A default maximum residue limit (MRL) of 0.01 mg/kg is set for chlorbromuron as per regulation (EC) no. 396/2005.
Application
The certified reference material (CRM) is intended to be used as a calibrant for chromatography and other analytical techniques.
Chlorobromouron CRM can also be used as below:

Method development for the quantification of 25 polar pesticides in fruit, vegetable, and water samples using high-performance liquid chromatography(HPLC)
Separation and determination of 12 substituted phenylurea herbicides by HPLC in the study to assess the leaching of the herbicides in two agricultural soil samples
Development of an HPLC method with diode array detection following dispersive liquid-liquid microextraction to determine 11 phenylurea herbicides in natural waters
Investigation of 1,6-hexanediol ethoxylate diacrylate (HEDA)-based polymeric monoliths as a sorbent for the extraction of phenylurea herbicides from water samples
Multi-residue analysis of 250 pesticides in surface water samples using liquid chromatography- quadrupole-Orbitrap high resolution tandem mass spectrometry

Legal Information
TraceCERT is a registered trademark of Merck KGaA, Darmstadt, Germany