NF EN ISO 20743

NF EN ISO 20743

June 2021
Standard Current

Textiles - Determination of antibacterial activity of textile products

This document specifies quantitative test methods to determine the antibacterial activity of all antibacterial textile products including nonwovens. This document is applicable to all textile products, including cloth, wadding, thread and material for clothing, bedclothes, home furnishings and miscellaneous goods, regardless of the type of antibacterial agent used (organic, inorganic, natural or man-made) or the method of application (built-in, after-treatment or grafting). This document covers three inoculation methods for the determination of antibacterial activity: a) absorption method (an evaluation method in which the test bacterial suspension is inoculated directly onto specimens); b) transfer method (an evaluation method in which test bacteria are placed on an agar plate and transferred onto specimens); c) printing method (an evaluation method in which test bacteria are placed on a filter and printed onto specimens). NOTE            Based on the intended application and on the environment in which the textile product is to be used, and also on the surface properties of the textile properties, the user can select the most suitable inoculation method. This document also specifies the colony plate count method and the adenosine triphosphate (ATP) luminescence method for measuring the enumeration of bacteria.

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Main informations

Collections

National standards and national normative documents

Publication date

June 2021

Number of pages

42 p.

Reference

NF EN ISO 20743

ICS Codes

07.100.99   Other standards related to microbiology
59.080.01   Textiles in general

Classification index

G39-020

Print number

2 - 01/09/2021

International kinship

European kinship

EN ISO 20743:2021
Sumary
Textiles - Determination of antibacterial activity of textile products

This document specifies quantitative test methods to determine the antibacterial activity of all antibacterial textile products including nonwovens.

This document is applicable to all textile products, including cloth, wadding, thread and material for clothing, bedclothes, home furnishings and miscellaneous goods, regardless of the type of antibacterial agent used (organic, inorganic, natural or man-made) or the method of application (built-in, after-treatment or grafting).

This document covers three inoculation methods for the determination of antibacterial activity:

a) absorption method (an evaluation method in which the test bacterial suspension is inoculated directly onto specimens);

b) transfer method (an evaluation method in which test bacteria are placed on an agar plate and transferred onto specimens);

c) printing method (an evaluation method in which test bacteria are placed on a filter and printed onto specimens).

NOTE            Based on the intended application and on the environment in which the textile product is to be used, and also on the surface properties of the textile properties, the user can select the most suitable inoculation method.

This document also specifies the colony plate count method and the adenosine triphosphate (ATP) luminescence method for measuring the enumeration of bacteria.

Replaced standards (1)
NF EN ISO 20743
September 2013
Standard Cancelled
Textiles - Determination of antibacterial activity of textile products

<p>ISO 20743:2013 specifies quantitative test methods to determine the antibacterial activity of all antibacterial textile products including nonwovens.</p> <p>ISO 20743:2013 is applicable to all textile products, including cloth, wadding, thread and material for clothing, bedclothes, home furnishings and miscellaneous goods, regardless of the type of antibacterial agent used (organic, inorganic, natural or man-made) or the method of application (built-in, after-treatment or grafting).</p> <p>Based on the intended application and on the environment in which the textile product is to be used and also on the surface properties of the textile properties, the user can select the most suitable of the following three inoculation methods on determination of antibacterial activity:</p> <p>a) absorption method (an evaluation method in which the test bacterial suspension is inoculated directly onto specimens);</p> <p>b) transfer method (an evaluation method in which test bacteria are placed on an agar plate and transferred onto specimens);</p> <p>c) printing method (an evaluation method in which test bacteria are placed on a filter and printed onto specimens).</p> <p>The colony plate count method and the ATP (ATP = Adenosine Tri-phosphate) luminescence method are also specified for measuring the enumeration of bacteria.</p>

Table of contents
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  • Avant-propos
  • 1 Domaine d'application
  • 2 Références normatives
  • 3 Termes et définitions
  • 4 Mesures de sécurité
  • 5 Appareillage
  • 6 Réactifs et milieux de culture
  • 7 Souches de référence
  • 8 Modes opératoires d'essai
  • 9 Jugement de l'efficacité de l'activité antibactérienne
  • 10 Rapport d'essai
  • Annexe A (normative) Numéros de souches
  • Annexe B (normative) Méthode d'agitation
  • Annexe C (normative) Mesurage quantitatif avec la méthode par comptage sur plaque
  • Annexe D (normative) Mesurage quantitatif avec la méthode par luminescence
  • Annexe E (informative) Exemples d'essais
  • Annexe F (informative) Efficacité de l'activité antibactérienne
  • Bibliographie
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