Vitroids™ & Lenticules® Discs by Merck

Certified Reference Microorganisms (CRM)

Vitroids™ and Lenticules® are discs containing accurately measured, viable microorganisms in easy-to-use formats. Just rehydrate and use, no need to prepare or maintain stock cultures.

Ideal for pharmaceutical, food & beverage, cosmetics, and clinical labs, they streamline microbiological quality control with reliable performance, traceability, and compliance.

REQUEST QUOTATION

Certified Microbial Load: Each disc contains a known quantity of CFUs (Colony Forming Units), verified under ISO 17025 and ISO 17034 standards, with a Certificate of Analysis (CoA) detailing organism type, CFU range, uncertainty, and source strain.
Traceable Strains: Derived from internationally recognized culture collections (e.g., NCTC, NCPF, CECT), ensuring genetic authenticity and regulatory compliance.
Minimal Handling, Maximum Accuracy: Delivered in an easy-to-use format, reducing preparation time and the risk of contamination.
Long Shelf-Life & Stability: Products are lyophilized for extended shelf life without compromising viability.
Batch-to-Batch Consistency: Manufactured under strict quality controls to ensure homogeneity and repeatability.

Certified reference microorganisms used to establish or verify microbiological methods.

Provide a known, traceable microbial load to ensure accuracy, precision, and regulatory compliance.

Ready-to-use reference discs for daily QC of media, reagents, and instruments.

Eliminate the need for live culture maintenance while improving consistency and traceability.

Provide standardized inoculum to confirm media support expected microbial growth.

Ensure reliability and compliance with USP <61>/<62> and ISO 11133 requirements.

Safe, stable materials for staff training, analyst competency, and proficiency testing.

Support consistent technique and confidence without handling live cultures.