TM174-TM 174 Antimicrobial Activity Assessment of New Carpets

Description

Untitled

TEST METHODS ARE DELIVERED AS A LINK IN YOUR EMAILED RECEIPT.

AATCC TM174-2022e, Antimicrobial Activity Assessment of New Carpets

Developed in 1991 by Committee RA31; revised 1992, 2011 (with title change), 2022; editorially revised and reaffirmed 1993; reaffirmed 1998, 2016; editorially revised 2004, 2010. 2019, 2023.

1. Purpose and Scope

1.1 This test method is designed to determine the antimicrobial activity of new carpet materials and consists of three procedures: a qualitative antibacterial assessment; a quantitative antibacterial assessment and quantitative antifungal assessment. It may also be used to evaluate the effect of a cleaning process (agreed upon by the interested parties) on the antimicrobial resistance of carpets.

2. Principle

2.1 This test method consists of three procedures, Test I, II, and III which can be used singly or in combination, depending on the extent of proof of antimicrobial activity the end-user is interested in acquiring. Test I is a qualitative assessment of antibacterial activity using both a Gram-positive and Gram-negative bacteria that can produce results in 24 h. Test II provides a quantitative procedure for the comparison and evaluation of the degree of antibacterial activity after a 24 h exposure to the test bacteria on the carpet swatches. Then the bacterial challenge is eluted from swatches and enumerated and a percent reduction by the carpet specimen is calculated. Test III is for assessment of the antifungal activity of carpet and resistance to a common fungal organism on nutrient rich medium.

Copyright American Association of Textile Chemists and Colorists, RTP, NC, USA. All rights reserved.

The above information is only a summary of the AATCC test method.