General description
This reference material (RM) is produced and certified in accordance with ISO/IEC 17025. This RM is traceable to primary material from an NMI, e.g. NIST or NMIJ. Certified content incl. uncertainty and expiry date are given on the certificate.Download your certificate at: http://www.sigma-aldrich.com
This product has met the following criteria to qualify for the following awards: