Microbiology Standards

Certified reference microorganisms: Vitroids and Lenticule discs

Quality control is an essential element of a laboratory’s quality assurance system and certified reference materials (CRMs) are necessary for effective quality control. The VITROIDS™ and LENTICULE® discs from Millipore are specially developed to provide laboratories with the ability to use suitable, ready-to-use microbiological controls for every media quality control test. The Colony forming unit (cfu)-concentrations are designed ensuring that no or only minimal dilution steps are required and are provided under license by National Collection of Type Cultures (NCTC®)/ National Collection of Pathogenic Fungi (NCPF®) and Spanish Type Culture Collection (Colección Española de Cultivos Tipo, CECT®), respectively.  

The LENTICULE® and VITROIDS™ discs are manufactured under conditions compliant with ISO 17034 and ISO/IEC 17025. These discs contain defined certified cfu’s with a standard deviation and expanded uncertainty. The discs contain pure cultures of bacteria, yeasts or molds in a solid water-soluble matrix. The certified reference material for microorganisms finds its application in routine quality control for food, beverage, water and environmental testing, for method development and validations and as cultures used in research studies.


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Bacteria standards

We provide an extensive range of pure cultures of bacteria CRMs LENTICULE® and VITROIDS™ discs that are stable for at least one year. The discs are supplied with bacteria in a viable stage (no lag phase or recovery time) and a comprehensive certificate of analysis that specifies the mean number of cfu’s, and an expanded uncertainty about the mean value.

Yeast standards

We supply yeast CRMs in VITROIDS™ discs with cfu values ranging from 15–80, 80-130 and 1,000-10,000 for your laboratory needs.

Mold standards

We offer mold CRMs in the form of VITROIDS™ discs to ensure the safety and efficacy of your products, that are routinely exposed to molds and fungi.

Negative controls standards

We have negative control CRMs in the form of LENTICULE® discs that ensures the effectiveness of your microbiological experiments.

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