Application

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

General description

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^®.

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)

Legal Information

ATCC is a registered trademark of American Type Culture Collection

Vitroids is a trademark of Sigma-Aldrich Co. LLC

CECT is a registered trademark of Universitat de Valencia

Derived from CECT^® strains

Other Notes

ATCC^® 25922, NCTC 12241, NCPF -, DSM 1103, LMG 8223, IHEM -, CIP 76.24

Origin Strain No. CECT^® 434