【 Principle 】

Gelatin trypsin hydrolysate and yeast extract provide nitrogen sources, vitamins, and trace elements; Glucose is a fermented sugar; Sodium chloride can maintain equilibrium osmotic pressure; Sodium deoxycholate and crystal violet can inhibit the growth of Gram positive bacteria, especially Gram positive bacilli and Streptococcus faecalis; Neutral red serves as a pH indicator; Agar is a coagulant.

Main components

Composed of gelatin trypsin hydrolysate, yeast extract, sodium chloride, glucose, sodium deoxycholate, crystal violet, neutral red, agar, and distilled water.

Storage conditions and expiration date

Storage conditions: This product should be stored in a dark environment at 2-8 ℃.

Validity period: The unopened original packaging has a validity period of 3 months.

This product is a disposable product.

Food coliform detection: isolation and counting of coliform bacteria in various fresh, cooked, and beverage foods.

Microbial testing of water quality: screening of coliform bacteria in drinking water, production water, and sewage.

Raw material incoming inspection: assessment of contamination level of food raw materials and traditional Chinese medicine raw materials.

Production environment monitoring: detection of coliform contamination in workshop countertops, instrument wiping samples.

Microbial limit test: Control the count of coliform bacteria in drugs and health foods.

Escherichia coli

Gram negative short rod-shaped bacteria, facultative anaerobic, capable of fermenting glucose; Cultivate at 35 ℃± 37 ℃ for 18-24 hours, with purple red colonies surrounded by red bile salt precipitation rings.

Klebsiella genus

Gram negative bacteria, facultative anaerobic, capable of fermenting glucose, usually with capsules; Cultivate at 35 ℃± 37 ℃ for 18-24 hours, with purple red colonies and possible bile salt precipitation circles.

Escherichia coli genus

Gram negative bacteria, facultative anaerobic, dynamic positive; Cultivate at 35 ℃± 37 ℃ for 18-24 hours, with purple red colonies and possible bile salt precipitation circles.

Citrobacter genus

Gram negative bacteria, facultative anaerobic, can utilize citrate salts; Cultivate at 35 ℃± 37 ℃ for 18-24 hours, with purple red colonies and possible bile salt precipitation circles.