CRM11994M

Listeria monocytogenes NCTC 11994 Lenticule^® discs

500-50000 CFU, suitable for microbiology, certified reference material, Manufactured by: Sigma-Aldrich Production GmbH, Switzerland

• Synonyme(s) : Microbiological standards, Certified reference material, Listeria NCTC 11994 Lenticule^® discs
• Code UNSPSC : 41116107
• Nomenclature NACRES : NA.24

Propriétés

• Qualité: certified reference material
• Niveau de qualité: 300
• Agence: ISO 17034; ISO/IEC 17025
• Forme: disc (hydrosoluble); solid
• Durée de conservation: limited shelf life, expiry date on the label
• Conditionnement: package of 10 discs
• Fabricant/nom de marque: Manufactured by: Sigma-Aldrich Production GmbH, Switzerland
• Impuretés: 500-50000 CFU
• Application(s): environmental; food and beverages; microbiology
• Température de stockage: −20°C
• Adéquation: Listeria monocytogenes; Listeria spp.

Description

Description générale

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 500-50000 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 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). They are manufactured by Sigma-Aldrich under license from UK Health Security Agency.

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 use in research studies and educational purposes.

Caractéristiques et avantages

• 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

Autres remarques

Strain origin: NCTC 11994

Other cell culture collections:

• DSM 15675
• CECT^® 4032

Click here to access BacDive database for more info on metabolism, genome, growth media and more

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.

Informations légales

Strain derived from NCTC

CECT is a registered trademark of Universitat de Valencia

Lenticule is a registered trademark of The Secretary of State for Health (United Kingdom)

Informations sur la sécurité

• Code de la classe de stockage: 11 - Combustible Solids
• Classe de danger pour l'eau (WGK): WGK 3