Key performance benefit: Certified microbiological reference material containing 1,000–10,000 CFU per disc for use as quantitative and qualitative control organisms in routine quality control.
Material & construction: Freeze-dried culture derived from a traceable CECT® strain; solid form; ready-to-use discs; package of 10 discs; certificate of analysis enclosed; produced under ISO 17034 and certified according to ISO/IEC 17025; manufactured by Sigma-Aldrich Production GmbH, Switzerland.
Risk reduction / compliance benefit: Certified reference material produced under reproducible conditions; authenticated strains; minimizes need for maintaining stock cultures; no dilution required; no recovery time or pre-enrichment step necessary; intended for use as daily internal quality control organisms; commercial replication or distribution prohibited.
Protection level: 1,000–10,000 CFU per disc; storage temperature −20°C; shelf life 2–3 years in a standard −20°C freezer; expiry date on label.
Comfort & usability: Ready-to-use; quick rehydration in 10 minutes; no dilution required; easy-to-use; cost-effective; robust and reliable; complete with comprehensive certificate of analysis.
Safety & compliance assurance: Certified reference material grade; compliant with ISO 17034 and ISO/IEC 17025; derived from CECT® strains; ATCC® and CECT® registered trademarks; Vitroids™ trademark of Merck KGaA; Greener Alternative Product (DfS-Developed).
Recommended For
Routine quality control in food testing
Beverage testing
Water testing
Environmental testing
Validation studies
Proficiency testing
Product Details
Organism: Bacillus cereus WDCM 00001
Form: Solid (Freeze-Dried Discs)
CFU Range: 1,000–10,000 CFU per disc
Packaging: Package of 10 discs
Storage Temperature: −20°C
Shelf Life: Limited; expiry date on label (2–3 years at −20°C)
Grade: Certified Reference Material
Agency: ISO 17034; ISO/IEC 17025
Manufacturer: Sigma-Aldrich Production GmbH, Switzerland
Quality Level: 300
Application: Microbiology
Suitability: Bacillus cereus, Bacillus spp.
Greener Alternative Category: DfS-Developed
Primary Industries
Food Testing Laboratories
Beverage Testing Laboratories
Water Testing Laboratories
Environmental Testing Laboratories
Standards and Certifications
ISO 17034
ISO/IEC 17025
Certified Reference Material
Derived from CECT® strains
FAQs
What is Bacillus cereus WDCM 00001 Vitroids used for?
Bacillus cereus WDCM 00001 Vitroids™ is a certified microbiological reference material used for quantitative and qualitative quality control in routine laboratory testing. It serves as a control organism in food, beverage, water, and environmental testing applications, supporting validation and proficiency testing programs.
What is the certified concentration per disc?
Each freeze-dried disc contains between 1,000 and 10,000 colony forming units. This defined range supports consistent performance in quality control procedures and allows laboratories to use the material as a standardized internal control without additional dilution or preparation steps.
How is this reference material produced and certified?
This product is manufactured under ISO 17034 and certified according to ISO/IEC 17025 requirements. It is derived from an authenticated, traceable CECT® strain and supplied with a comprehensive certificate of analysis, ensuring documented accuracy, reproducibility, and compliance for regulated laboratory environments.
How is the product stored and what is its shelf life?
The discs must be stored at −20°C to maintain stability and certified performance. When kept at this temperature, the product typically has a shelf life of two to three years, with the specific expiration date clearly stated on the product label.
Is the product ready to use upon receipt?
Yes, the freeze-dried discs are ready to use and require only brief rehydration, typically within ten minutes. No dilution, recovery period, or pre-enrichment step is required, simplifying workflow and reducing the need to maintain in-house stock cultures.
