Listeria monocytogenes NCTC 11994 Lenticule® discs
SIAL/CRM11994L - 30-120 CFU, suitable for microbiology, certified reference material, Manufactured by: Sigma-Aldrich Production GmbH, Switzerland
Synonym: L. monocytogenes NCTC 11994 Lenticule® discs; Listeria monocytogenes NCTC 11994 Lenticule® discs; Certified reference material; Microbiological standards
Product Type: Chemical
Lenticule® Microbiological standards
Lenticule® Certified Reference Material
Lenticule® discs are Certified Microorganisms Standards
| agency | ISO 17034 |
| ISO/IEC 17025 | |
| application(s) | environmental food and beverages |
| microbiology | |
| form | disc (hydrosoluble) |
| solid | |
| grade | certified reference material |
| greener alternative category | DfS-Developed  |
| manufacturer/tradename | Manufactured by: Sigma-Aldrich Production GmbH, Switzerland |
| packaging | pack of 10 |
| Quality Level | 300 |
| shelf life | limited shelf life, expiry date on the label |
| storage temp. | −20°C |
| suitability | Listeria monocytogenes |
| Listeria spp. | |
| sustainability | Greener Alternative Product |
| Application: | Listeria monocytogenes NCTC 11994 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-month 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 |
| General description: | Listeria monocytogenes NCTC 11994 Lenticule® discs are Certified Microorganisms Standards (Certified Microbiological Reference Materials) which can be used as quantitative and qualitative control organisms. They contain colony forming units (CFUs) in the range of 30-120 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 certified according to ISO/IEC 17025 and produced under reproducible conditions compliant with ISO 17034 using authenticated strains from NCTC. These ready-to-use microbiological controls minimize the need to maintain control strains in the test laboratory and guarantee 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). They are manufactured by Sigma-Aldrich under license from UK Health Security Agency. |
| General description: | 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. |
| Legal Information: | CECT is a registered trademark of Universitat de Valencia |
| Legal Information: | Lenticule is a registered trademark of The Secretary of State for Health (United Kingdom) |
| Other Notes: | Strain origin: NCTC 11994 Other cell culture collections: • DSM 15675 • CECT® 4032 Click here  to access the BacDive database for more info on metabolism, genome, growth media, and more |
| Other Notes: | Strain History - Accessioned into the NCTC in 1986 < P. N. Pini (Food Hygine Laboratory, Central Public Health Laboratory, Colindale, London, UK). Isolated from soft cheese, UK, in 1986-85. |
| RIDADR | UN3373 - class 6.2 Biological substance, Category B |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| Storage Temp. | −20°C |
| UNSPSC | 41116107 |