This certified reference material (CRM) is produced and certified in accordance with ISO 17034 and ISO/IEC 17025. All information regarding the use of this CRM can be found on the certificate of analysis.
Download your certificate at: http://www.sigma-aldrich.com.
Please specify if you require a single batch - in the remark field when ordering (only for orders with more than 15 packs)
Vitroids™ discs contain Escherichia coli WDCM 00013 viable microorganisms (80-130 CFU) in a certified quantity (generally accredited according to ISO/IEC 17025), produced under reproducible conditions compliant with ISO 17034:2016 using authenticated strains from CECT®. The discs consist of pure cultures of bacteria in a solid matrix, stable for at least one year and are in a viable state with a shelf life of 1-3 years.
Each batch is provided with a comprehensive certificate of analysis that specifies the mean number of colony-forming units (CFU), an expanded uncertainty about the mean, details about the method used to determine the product data and the number of passages (subcultures) from the original strain.
Vitroids™ are derived from a traceable culture obtained freeze-dried from CECT®.
- Daily quality control
- Performance testing of media acc. ISO 11133
- Validation of new methods
- Materials for proficiency testing or ring trials
- Method development
- Staff training
- Starter cultures
Features and Benefits
- Defined CFU range and low standard deviation
- Fast, reliable and easy to use
ATCC® 25922, NCTC 12241, NCPF -, DSM 1103, LMG 8223, IHEM -, CIP 76.24
Origin Strain No. CECT® 434
Derived from CECT® strains
ATCC is a registered trademark of American Type Culture Collection
CECT is a registered trademark of Universitat de Valencia
Vitroids is a trademark of Sigma-Aldrich Co. LLC