【 Principle 】

Casein peptone and soy peptone provide rich amino acids, peptides, and nitrogen sources; Glucose, as a fermentable carbon source, meets the basic metabolic needs of bacteria and fungi; Sodium chloride maintains isotonic osmotic pressure; Sodium dihydrogen phosphate forms a buffer system to stabilize a neutral culture environment; Phosphatidylcholine neutralizes quaternary ammonium salts, benzalkonium chloride and other cationic preservatives, as well as disinfectant residues; Tween-80 emulsified oils, mineral oils, phenols, and alcohol antibacterial ingredients relieve the inhibitory effect of preservatives on microorganisms.

Main components

Composed of casein peptone, soy peptone, glucose, sodium chloride, disodium hydrogen phosphate, lecithin, Tween-80, 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 6 months.

This product is a disposable product.

Pre microbial limit testing for cosmetics: used for homogenizing and diluting samples of skincare products, toiletries, etc., to neutralize the antibacterial effect of preservatives.

Neutralize multiple antibacterial ingredients: lecithin neutralizes quaternary ammonium salts, Tween 80 neutralizes mineral oils and phenols, eliminating interference from cosmetic anti-corrosion systems.

General pre-treatment for all kinds of daily chemical samples: cream, water, facial mask, color makeup and other all kinds of cosmetic samples are buffered and bacteria enriched.

Recovery and cultivation of damaged microorganisms: A mild nutrient system repairs bacteria and fungi damaged by preservatives, improving detection rates.

Pharmaceutical/Medical Device Wipe Sample Testing: Surface swabs containing antibacterial and disinfectant residues are used for elution, neutralization, and bacterial enrichment.

Sterility testing dilution medium: As a neutralizing diluent, it is used to prepare sterile validation blanks and pre-processing samples.

Staphylococcus aureus

Gram positive Staphylococcus aureus, spore free, facultative anaerobic, salt tolerant; Cosmetics focus on controlling pathogenic bacteria, which are prone to sublethal damage caused by preservatives and can be repaired and proliferated in SCDLP.

Pseudomonas aeruginosa

Gram negative single ended flagellar bacteria, obligate aerobic; Common contaminating bacteria in water bodies and creams are tolerant to trace amounts of antibacterial residues, and some strains produce green water-soluble pigments.

Escherichia coli

Gram negative short rod-shaped bacteria with motile flagella and facultative anaerobic activity; Indicating bacteria for fecal and raw material contamination, fermenting lactose to produce acid and gas, with strong environmental adaptability.

Bacillus subtilis (Bacillus subtilis, Bacillus cereus)

Gram positive Bacillus subtilis can form stress resistant endophytic spores; Incomplete sterilization of raw materials can lead to residue, and under nutritional conditions, spores can germinate and reproduce in large quantities.