The following tables state the RM codes, validity period, certified values c and ± interval of the expanded combined uncertainty Uc, both expressed in % m/m.
A consecutive replacement with slightly different figures, distinguished alphabetically in the code, is available for supply when the original batch is out of stock.
CRM
The entire course of projecting, candidate materials selection, processing, testing and final characterisation comply with ISO Guides 34, 35 and ISO 17025. The certified values as results of the interlaboratory experiment with international participation are traceable to the adequate references.