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ISO/CD 21256-5

Fine bubble technology — Cleaning applications — Part 5: Test method for household mould, Rhodotorula, removal using ultrafine bubble water

General information

30.60     Feb 8, 2026

ISO

ISO/TC 281

International Standard

Scope

This document specifies a testing method designed for assessing the cleaning of household mould by using ultrafine bubble water.
The process was thoroughly established using both ‘microscopic examination’ and ‘culturing and counting techniques’ to evaluate the performance of the mould removal in domestic settings.
It is applicable for a thorough assessment of the efficacy of household mould cleaning procedures.
This method ensures a comprehensive evaluation of mould remediation efforts. 

Life cycle

NOW

PROJECT
ISO/CD 21256-5
30.60 Close of voting/ comment period
Feb 8, 2026