[Testing Principle]

Casein peptone is rich in free amino acids and short peptides, providing balanced and stable nutrition that can supply essential nutrients for the growth of most non-demanding aerobic and facultative anaerobic bacteria. Beef extract powder supplements carbon sources, inorganic salts, and vitamins, enhancing the nutritional system. Soluble starch adsorbs heavy metal ions and trace toxic impurities in the culture medium, eliminating interference from impurities with antibiotics and bacteria, buffering harmful substances produced by bacterial metabolism, stabilizing bacterial growth, and ensuring uniform colony formation. Agar serves as the gelling agent.

Main Ingredients

Composed of casein peptone, soluble starch, beef extract powder, and agar.

[Storage Conditions and Shelf Life]

Storage conditions: This product should be stored in a light-protected environment at 2-8°C.

Expiration date: The original packaging remains valid for 6 months when unopened.

This product is for single-use only.

Paper diffusion method drug sensitivity test: to determine the sensitivity of non bacterial strains to antibiotics and guide clinical medication.

Purification and passage of non harsh bacteria: Purification, activation, and short-term preservation of bacteria such as Escherichia coli and Staphylococcus.

Preliminary screening of clinical specimen isolation: Separate common aerobic/facultative anaerobic pathogenic bacteria from sputum, urine, pus, secretions, etc.

Standardized cultivation of quality control strains: Resuscitate ATCC standard strains to ensure the accuracy of drug sensitivity results.

Pre cultivation of biochemical experiments: providing pure culture materials for biochemical identification of oxidase, peroxidase, etc.

Environmental and instrument bacterial screening: detecting common pathogenic bacteria in hospital infectious agents, water samples, and consumables.

Escherichia coli

G⁻ facultative anaerobic bacillus, an opportunistic pathogen in the urinary and intestinal tracts; lactose-fermenting, with mostly motile; colonies of moderate size, gray-white, smooth, moist, and convex with a translucent appearance.

Klebsiella genus

G⁻ facultative anaerobic bacillus, non-flagellated, with a capsule; common pathogenic bacteria found in sputum and wound exudates; colonies are large, grayish-white, highly viscous, and exhibit obvious stringing with a loop inoculation.

Staphylococcus aureus

*Streptococcus pyogenes*, facultative anaerobe, plasma coagulase-positive, causing skin and wound infections; colonies of medium size, golden/yellowish-white, opaque, smooth and raised.

Salmonella, Shigella

G⁻ facultative anaerobic pathogenic bacteria, non-capsulated (except for some Salmonella), causing intestinal infections; colonies are small to medium in size, smooth, translucent, and gray-white.