This Standard Reference Material (SRM) is a portland cement blended with limestone intended primarily for the evaluation of methods for analysis of cements and materials of similar matrix. A unit of SRM 1889b consists of five vials, each containing about 5 g of cement ground to pass through a 75 mum (No. 200) sieve, and each sealed in a foil pouch.SRM 1889b_cert SRM 1889b _SDS
Storage: 15-25C
Legal Information: SRM is a registered trademark of National Institute of Standards and Technology