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ISO 21807:2004

Microbiology of food and animal feeding stuffs -- Determination of water activity

General information

Withdrawn from 01.11.2018
ICS Groups
07.100.30 Food microbiology
Directives or regulations
None

Standard history

Status
Date
Type
Name
28.11.2017
Main
ISO 18787:2017
Main
ISO 21807:2004
ISO 21807:2004 gives basic principles and requirements for physical methods of determining the water activity of products intended for human consumption and the feeding of animals.
Water activity can be used to predict microbial growth and determine the microbiological stability of a food product, and it also provides an important, quantitatively determinable criterion for estimating the times for which a foodstuff can be kept.

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Standard monitoring
English (PDF 150 KB)

Related products

Main

ISO 18787:2017

Foodstuffs -- Determination of water activity
Newest version Valid from 28.11.2017
Main

EVS-EN ISO 18593:2018

Microbiology of the food chain - Horizontal methods for surface sampling (ISO 18593:2018)
Newest version Valid from 04.09.2018
Main

EVS-EN ISO 11133:2014

Microbiology of food, animal feed and water - Preparation, production, storage and performance testing of culture media (ISO 11133:2014)
Valid from 01.07.2014
Main

EVS-EN ISO 4833-1:2013

Microbiology of the food chain - Horizontal method for the enumeration of microorganisms - Part 1: Colony count at 30 °C by the pour plate technique (ISO 4833-1:2013)
Valid from 09.12.2013

Standards designation

EVS Estonian standard
EN European standard (published by an CEN or CENELEC)
EN ISO International standard adopted as an European standard
ISO International Organization for Standardization’s standard
IEC International Electrotechnical Commission’s standard
HD CENELEC’s harmonisation document
   
EVS-EN European standard implemented in Estonia
EVS-EN ISO International standard adopted in Europe and implemented in Estonia
EVS-EN ISO/IEC International standard/International electrotechnical standard adopted in Europe and implemented in Estonia
EVS-IEC International electrotechnical standard implemented in Estonia
EVS-ISO International standard implemented in Estonia
   
A, AMD amedment
+A a full standard plus the amendment
/A only amendment
COR, AC corrigendum
+COR a full standard plus the corrigendum
NA national annex
+NA a full standard plus the national annex
/NA only national annex
TS technical specification
TR technical report
CWA agreement, developed by a CEN or CENELEC
prEVS-EN (etc) draft standard
   
et the standard is in Estonian only
en the standard is in English only
et-en the standard is in Parallel text Estonian-English