ISO/TS 27265:2026

Heat-processed milk and dried milk products — Enumeration of thermoresistant spores of thermophilic bacteria

Publication date: May 14, 2026

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Current stage: 60.60 Effective date: May 14, 2026

Originator: ISO

Owner: ISO/TC 34/SC 5

Type: Technical Specification

ICS: 67.100.10

Languages: English

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Status: Published

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This document specifies methods for the enumeration of thermoresistant spores of thermophilic bacteria in heat-processed milk and dried milk products by using a colony-count technique at 55 °C after heating the sample at 106 °C or 100 °C.
The applicability of this document is limited to heat-processed milk including pasteurized, ultra-high temperature (UHT) processed and sterilized milk; as well as dried whole milk, skim milk, buttermilk and whey products.

ISO/TS 27265:2026

Heat-processed milk and dried milk products — Enumeration of thermoresistant spores of thermophilic bacteria

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