SSH ISO 11866-2:2000

Qumësht dhe produkte qumështi. Numërimi i escheria coli të presupozuar. Pjesa 2: Teknika e numërimit të kolonive në 44ëC duke përdorur membrana.

Milk and milk products — Enumeration of presumptive Escherichia coli — Part 2: Most probable number technique using 4-methylumbelliferyl-beta-D-glucuronide (MUG)

Scope

Describes a combined method for the enumeration of presumptive Escherichia coli and of presumptive coliforms by means of a culture technique involving a liquid medium with 4-methylumbelliferyl-ß-D-glucuronide (MUG), calculation of the number of Escherichia coli per gram or per millilitre by the most probable number (MPN) technique after incubation at 30 °C.