Vitroids™ discs contain Escherichia coli WDCM 00012 viable microorganisms (50,000-150′000 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®.
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)
- 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® 8739, NCTC 12923, NCPF -, DSM 1576, LMG 8063, IHEM -, CIP 53.126
Origin Strain No. CECT® 516
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