Letheen Broth, Modified(Modified Letheen Broth) M976

วัตถุประสงค์การใช้งาน

This medium is recommended for screening cosmetic products for microbial contamination.

Composition**

Ingredients Gms / Litre

Peptic digest of animal tissue 20.000

Casein enzymic hydrolysate 5.000

Beef extract 5.000

Yeast extract 2.000

Sodium chloride 5.000

Sodium bisulphite 0.100

Lecithin 0.700

Polysorbate 80 5.000

Final pH ( at 25°C) 7.0±0.2

**Formula adjusted, standardized to suit performance parameters

วิธีการเตรียม

Suspend 42.8 grams in 1000 ml distilled water. Heat if necessary to ensure complete dissolution. Sterilize by autoclaving at

15 lbs pressure (121°C) for 15 minutes. Mix well and dispense as desired