ISO 21703:2019

Surface active agents — Microbiology — Microbiological test methods for liquid hand dishwashing

This document provides microbiological test methods for enumeration and detection of aerobic mesophilic bacteria, detection of Escherichia coli and Pseudomonas aeruginosa in liquid hand dishwashing.

Agents de surface — Microbiologie — Méthodes d’essai microbiologique pour les détergents liquides de lavage de vaisselle à la main

General Information

• Status: Published
• Publication Date: 14-Jan-2019
• ICS: 07.100.99 - Other standards related to microbiology
• ICS: 71.100.40 - Surface active agents
• Technical Committee: ISO/TC 91 - Surface active agents
• Drafting Committee: ISO/TC 91 - Surface active agents
• Current Stage: 9020 - International Standard under periodical review
• Start Date: 15-Jan-2024
• Completion Date: 15-Jan-2024

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 21703
First edition
2019-01
Surface active agents — Microbiology
— Microbiological test methods for
liquid hand dishwashing
Agents de surface — Microbiologie — Méthodes d’essai
microbiologique pour les détergents liquides de lavage de vaisselle
à la main
Reference number
ISO 21703:2019(E)
©
ISO 2019

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ISO 21703:2019(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2019
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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Published in Switzerland
ii © ISO 2019 – All rights reserved

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ISO 21703:2019(E)

Contents Page
Foreword .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 2
5 Diluents and culture media . 2
5.1 General . 2
5.2 Neutralizing diluent and diluents . 2
5.2.1 General. 2
5.2.2 Neutralizing diluent: Fluid casein digest — soy lecithin — polysorbate 20
medium (SCDLP 20 broth) . 3
5.2.3 Diluent for the bacterial suspension (Tryptone sodium chloride solution) . 3
5.3 Culture medium for counting . 3
5.3.1 General. 3
5.3.2 Soybean-casein digest agar medium (SCDA) or tryptic soy agar (TSA) . 3
5.3.3 Other medium for counting . 4
5.4 Culture medium for detection . 4
5.4.1 General. 4
5.4.2 Enrichment broth: Eugon LT 100 broth . 5
5.5 Culture media for isolation and identification . 5
5.5.1 MacConkey agar medium . 5
5.5
...