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ISO 21187:2021

Milk — Quantitative determination of microbiological quality — Guidance for establishing and verifying a conversion relationship between results of an alternative method and anchor method results

Publication date:   Feb 23, 2021

General information

90.93   Standard confirmed   Jul 17, 2026

ISO

ISO/TC 34/SC 5 Milk and milk products

International Standard

67.100.01   Milk and milk products in general | 07.100.30   Food microbiology

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Scope

This document gives guidelines for the establishment of a conversion relationship between the results of an alternative method and an anchor method, and its verification for the quantitative determination of the microbiological quality of milk.
NOTE The conversion relationship can be used a) to convert results from an alternative method to the anchor basis or b) to convert results/limits, expressed on an anchor basis, to results in units of an alternative method.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 21187:2004

NOW

PUBLISHED
ISO 21187:2021
90.93 Standard confirmed
Jul 17, 2026