Agency
ISO 6579
质量水平
表单
powder
技术
microbiological culture: suitable
pH值（酸碱度）
7.0±0.2 (25 °C)
应用
food and beverages
pharmaceutical
储存温度
15-25°C
适用性
selective and differential for Salmonella Shigella
一般描述
GranuCult® prime Salmonella Shigella (SS) Agar is a nutrient rich medium which is designed to isolate and differentiate Salmonella spp. from food, animal feed, water, and other test samples.
The presence of brilliant green, ox bile, high concentrations of thiosulfate and citrate largely inhibits the accompanying flora and swarming of Proteus spp, while allowing the growth of Salmonella spp. The synergistic reaction between thiosulfate and iron salt present in the media enables the growth of H2S positive black color colonies.
Lactose present in the media differentiates between the lactose positive and lactose negative microorganisms. Lactose fermenting microbes form an acid which is indicated by forming red colonies due to the presence of a pH indicator, neutral red. Peptones provide nitrogen, vitamins, amino acids, and minerals for growth and agar acts as a solidifying agent.
The presence of brilliant green, ox bile, high concentrations of thiosulfate and citrate largely inhibits the accompanying flora and swarming of Proteus spp, while allowing the growth of Salmonella spp. The synergistic reaction between thiosulfate and iron salt present in the media enables the growth of H2S positive black color colonies.
Lactose present in the media differentiates between the lactose positive and lactose negative microorganisms. Lactose fermenting microbes form an acid which is indicated by forming red colonies due to the presence of a pH indicator, neutral red. Peptones provide nitrogen, vitamins, amino acids, and minerals for growth and agar acts as a solidifying agent.
应用
GranuCult® prime Salmonella Shigella (SS) Agar is used to isolate and differentiate Salmonella spp. and Shigella spp from food, animal feed, water, and other test samples.
分析说明
- Salmonella
- spp. produce translucent colonies with or without black center and yellowish-brown colored medium or may appear as almost black colonies due to H2S production.
- Shigella spp. produce translucent colonies without black center and yellowish-brown colored medium.
法律信息
GRANUCULT is a registered trademark of Merck KGaA, Darmstadt, Germany
NutriSelect is a registered trademark of Merck KGaA, Darmstadt, Germany
免责声明
We offer two media types: the superior granulated GranuCult® and the cost-efficient powdered NutriSelect® culture media, depending on your needs. The designations basic, plus, or prime are added to indicate the quality control level, from basic quality control to standard QC plus to prime for full regulatory compliance.
储存分类代码
11 - Combustible Solids
WGK
WGK 3
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