Microbiology CRMs

Certified Reference Microorganisms are materials which are produced under ISO guide 34 and certified according ISO/IEC 17025. Sigma-Aldrich provides two product lines of microbiology CRMs. The LENTICULE® discs are produced in partnership and under license from PHE with strains from NCTC and NCPF. The Vitroids are Sigma-Aldrich′s own innovative development of discs containing CECT® strains. These discs contain defined certified colony forming units (CFUs) with a standard deviation and an expanded uncertainty.

See also our actual Certified Reference Microorganisms brochure.