• Lactose Bile Medium
  • Lactose Bile Medium

Lecithin Tween 80 Nutrient Agar

Used for determining the total bacterial count in cosmetics.Peptone and beef powder provide carbon and nitrogen sources, vitamins, and growth factors; Sodium chloride maintains a balanced osmotic pressure.
Peptone 20.0
Sodium chloride 5.0
Beef Flour 3.0
Lecithin 1.0
Tween 80 7.0
Agar 15.0
$30.00
  • Lactose Bile Medium

SPECIFICATION

Purpose: Used for determining the total bacterial count in cosmetics.

Composition (g/L)
Peptone 20.0
Sodium chloride 5.0
Beef Flour 3.0
Lecithin 1.0
Tween 80 7.0
Agar 15.0
PH value 7.2 ± 0.1 25 ℃

Inspection principle:
Peptone and beef powder provide carbon and nitrogen sources, vitamins, and growth factors; Sodium chloride maintains a balanced osmotic pressure; Lecithin and Tween 80 can neutralize preservatives and disperse substances in emulsions. Lecithin can neutralize quaternary ammonium salts, Tween 80 can neutralize phenols, hexachlorophenols, and formalin, and the combination of the two can neutralize ethanol; Agar is a coagulant for culture medium.

Usage
Weigh 48.0g of this product, heat and dissolve it in 1000ml of distilled water, pack separately, sterilize under high pressure at 121 ℃ for 20 minutes, and set aside.
Lecithin Tween 80 nutrient agar microbial sensitivity test:
Prepare the culture medium according to the label usage, inoculate the following quality control strains, and incubate them aerobic at 36 ± 1 ℃ for 48 ± 2 hours.
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