Microorganism and DNA Standards

Through our Vitroids (TM=Vitroids) and Lenticule(TM=Lenticule) discs range, Sigma-Aldrich is the first company to produce certified reference test strains under double accreditation. They are certified according to ISO 17025, produced under ISO Guide 34, and meet UKAS guidelines. These products contain a precisely defined and certified cfu level in a dried state on small discs.

Sigma-Aldrich also offers certified reference DNA.