CRM11994L
Listeria monocytogenes NCTC 11994 Lenticule® discs
30-120 CFU, suitable for microbiology, certified reference material, Manufactured by: Sigma-Aldrich Production GmbH, Switzerland
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L. monocytogenes NCTC 11994 Lenticule® discs, Listeria monocytogenes NCTC 11994 Lenticule® discs, Certified reference material, Microbiological standards
推荐产品
等级
certified reference material
质量水平
Agency
ISO 17034
ISO/IEC 17025
形式
disc (hydrosoluble)
solid
保质期
limited shelf life, expiry date on the label
包装
pack of 10
制造商/商品名称
Manufactured by: Sigma-Aldrich Production GmbH, Switzerland
应用
environmental
food and beverages
microbiology
储存温度
−20°C
适用性
Listeria monocytogenes
Listeria spp.
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一般描述
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.
应用
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.
特点和优势
- 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
其他说明
Strain origin: NCTC 11994
Other cell culture collections:
Other cell culture collections:
- DSM 15675
- CECT® 4032
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.
法律信息
CECT is a registered trademark of Universitat de Valencia
Lenticule is a registered trademark of The Secretary of State for Health (United Kingdom)
WGK
WGK 3
法规信息
高风险级别生物产品--病毒,疫苗等
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