Common Name: SS Agar
English name:Salmonella Shigella Aga
Used for selective isolation and cultivation of Salmonella and Shigella.
Culture medium is a mixed nutritional product prepared by artificial methods, specifically for microbial cultivation, separation, identification, research, and preservation. The peptone and beef extract contained in SS agar provide carbon, nitrogen, vitamins, and minerals; Lactose is a fermentable sugar; No. 3 bile salt, sodium citrate and brilliant green inhibited gram-positive bacteria, most coliforms and Proteus, but did not affect the growth of salmonella; Sodium thiosulfate and ammonium iron citrate are used to detect the production of hydrogen sulfide, resulting in a black colony center; Neutral red is the pH indicator, and the colonies that ferment sugar to produce acid are red, while the colonies that do not ferment sugar are colorless; Agar is a coagulant for culture medium.
It is made from culture medium materials such as peptone, beef extract, and lactose by ball milling and packaging.
After pre-treatment according to GB standards, the samples were inoculated into a culture medium at 36 ± 1 ℃ for 18-24 hours, and the results were observed.
Growth of fecal Enterococcus was inhibited; The growth of Escherichia coli is partially inhibited; Salmonella typhimurium grows well, colorless colonies, with or without black hearts; Shigella flexneri grows well with colorless colonies.
1. This culture medium is only used for scientific research and research
2. The collected specimens must be inoculated and cultured as soon as possible to ensure accurate results.
3. The specimens used and their cultivation waste should be considered as potentially infectious substances and should be disposed of in accordance with the operating standards of infectious disease laboratories.
4~30 ℃, stored away from light.
【Period of validity】
The validity period is 3 years.
1. SN/T 1538.1-2005 Guidelines for the Preparation of Culture Medium Part 1: General Principles for Quality Assurance of Laboratory Culture Medium Preparation
2. SN/T 1538.2-2007 Guidelines for the Preparation of Culture Media Part 2: Practical Guidelines for Performance Testing of Culture Media
3. WS/T 232-2002 Quality Inspection Procedures for Commercial Microbial Culture Media
4. GBT 4789.28-2003 Microbiological examination of food hygiene - Staining methods, culture media, and reagents