ISO 6461-2:1986

Water quality — Detection and enumeration of the spores of sulfite-reducing anaerobes (clostridia) — Part 2: Method by membrane filtration

Publication date: Feb 6, 1986

General information

Current stage: 90.92 Effective date: May 28, 2025

Originator: ISO

Owner: ISO/TC 147/SC 4

Type: International Standard

ICS: 07.100.20

Languages: French English

Buying

Status: Published

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Scope

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.

Life cycle

NOW

PUBLISHED
ISO 6461-2:1986
90.92 Standard to be revised
May 28, 2025

REVISED BY

ABANDON
ISO/CD 6461-2

IN_DEVELOPMENT
ISO/AWI 6461-2