Description
General description
Citrobacter freundii NCTC 9750 Low count Lenticule® discs are Microorganisms Standards (Microbiological Reference Materials) which can be used as quantitative and qualitative control organisms. They contain colony forming units (CFUs) in the range of 500-50000 CFU per disc. The technology allows long-term conservation and renders the organisms resistant to temperature changes. They are intended to be used as daily internal quality control organisms.
These microorganisms are produced under reproducible conditions using authenticated strains from NCPF. These ready-to-use microbiological controls minimize the need for maintaining control strains in the test laboratory and guarantee the use of an authenticated control culture for every quality control test.
Lenticule® discs are prepared from a traceable culture obtained freeze-dried from the National Collection of Type Cultures (NCTC) or National Collection of Pathogenic Fungi (NCPF) and are manufactured by Sigma-Aldrich under license from UK Health Security Agency.
We are committed to bringing you Greener Alternative Products. This product is a Design for Sustainability (DfS) developed product, which belongs to one of our four categories of greener alternatives. Click here to view its DfS scorecard.
Application
Citrobacter freundii NCTC 9750 Low count Lenticule® discs are used as reference strains in routine quality control for food, beverage, water, and environmental testing. Additionally, they are excellent for use in method development and validations, as starter cultures, and for research studies and educational purposes.
Features and Benefits
Ready-to-use at convenient CFU ranges
No dilution required
Quick rehydration in 10 minutes
At least 16 months of shelf life in a standard -20 °C freezer
Complete with a comprehensive certificate of analysis
No maintenance of stock cultures
No recovery time or pre-enrichment step is necessary
Robust, efficient, and reliable
Easy-to-use
Cost-effective
Other Notes
Strain origin: NCTC 9750
Other cell culture collections:
DSM 30039
ATCC® 8090
CECT® 401
Click here to access the BacDive database for more info on metabolism, genome, growth media, and more
Strain History - Accessioned into the NCTC in 1953 < American Type Culture Collection (as ATCC 8090) < CH Werkman. Isolation substrate unknown, geographic orgin unknown, before 1954.
Legal Information
ATCC is a registered trademark of American Type Culture Collection
CECT is a registered trademark of Universitat de Valencia
Lenticule is a registered trademark of The Secretary of State for Health (United Kingdom)
