CAS Number
Formula
Weight
Usages:
For determination of Escherichia coli in drinking water.
Principle:
Trypton provide carbon and nitrogen sources; the 3rd bile suppress gram-positive bacteria, especially against Gram-positive bacteria and fecal streptococci.
Formulation（per liter）:
Tryptone 20.0g
The 3rd bile 1.5g
Lactose 5.0g
Dipotassium hydrogen phosphate 4g
Potassium dihydrogen phosphate 1.5g
Sodium chloride 5.0g
MUG 0.05g
Final pH 6.9 ± 0.2
How to use：
1.Suspend 37.05g in 1 L of distilled water , stirring heated to boiling until completely dissolved, dispensing flask, 121 ℃ autoclave for 15min.
2.Diluted and treated samples.
Storage: Keep container tightly closed, store in a cool, dry place, away from bright light. Storage period of 3 years.
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