Biosisto has for the process control of ISO 4833 (1 and 2) four different Certified Reference Materials available each with their own characteristics.
What you choose depends on what the requirement of your laboratory is.

The differences are schematically shown in the table below.

Single or multi-strain CRMAccreditatedMetrological Traceability ofMedia Performance testing
CRM-SASingleYesStrain & Property valueYes
CRM-BSUBTSingleStrainYes
CRM-CCMulti of 3 strains
only suitable for total count analysis
StrainsYes
1 check instead of
3 different checks
CRM-BLESMulti of 4 strains
suitable for multiple analysis
Strains

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Quality in Control

Microbiological laboratories should be able to receive reliable analysis without much overhead. A microbiological analyst must be able to focus on the primary activities, for example analysis of the sample material. Quality control should support the analyst in a logical and simple manner. By using modern information technology, process control and quality assurance are designed smarter and more effective.

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