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Escherichia coli WDCM 00012 Vitroids

80-130 CFU mean value range, certified reference material, suitable for microbiology

E. coli WDCM 00012 Vitroids


certified reference material

Quality Level

shelf life

limited shelf life, expiry date on the label



storage temp.


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General description

These Vitroids discs contain Escherichia coli WDCM 00012 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:

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

Other Notes

ATCC® 8739, NCTC 12923, DSM 1576

Origin Strain No. CECT® 516

Legal Information

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

Storage Class Code

6.2 - Infectious substances



Regulatory Information


Certificate of Analysis

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Origin

Enter Lot Number to search for Certificate of Origin (COO).

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