DIN ISO 16649-1:2020-07
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Microbiology of the food chain – Horizontal method for the enumeration of betaglucuronidasepositive Escherichia coli – Part 1: Colonycount technique at 44 °C using membranes and 5bromo4chloro3indolyl betaDglucuronide (ISO 166491: 2018), English translation of DIN ISO 16649-1:2020-07
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07-01-2020
This document specifies a horizontal method for the enumeration of β-glucuronidase-positive Escherichia coli by colony-count technique after resuscitation using membranes and incubation at 44 °C on a solid medium containing a chromogenic ingredient for detection of the enzyme β-glucuronidase[9] [10][13][14][17][18][19][20].
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