NA 119
DIN Standards Committee Water Practice
Project
Water quality - Detection and enumeration of the spores of sulfite-reducing anaerobes (clostridia) - Part 2: Method by membrane filtration
Abstract
The procedure is applicable to all types of water, except when a large amount of particulate material is liable to be retained by the membrane. The principle covers several steps from selection by applying heat to destroy vegetative bacteria to filtration of the water sample through a membrane filter having a suitable pore size (0,2 µm) to retain the spores in or on it. The filter is placed on a selective culture medium, followed by incubation and counting of black colonies.
Begin
2025-05-29
WI
00230473
Planned document number
prEN ISO 6461-2 rev
Responsible national committee
NA 119-09-03 AA - Microbiology
