AATCC TM 174
Antimicrobial Activity Assessment of Carpets
This test provides qualitative and quantitative evaluation of antimicrobial activity for new treated carpets. There are 3 methods.
Method I: Qualitative Assessment of Antibacterial Activity on Carpets: Single Streak Method.
Swatches of treated and untreated carpet samples are placed onto the surface of agar plates that have been inoculated with a streak of the test bacteria, incubated, and then evaluated for bacterial growth under and/or near the carpet samples. Zones of inhibition are measured and reported, if present. Growth or no growth under the samples is also reported.
Method II: Quantitative Assessment of Antibacterial Activity on Carpets
Test carpets are inoculated with test organisms. After incubation the bacteria are eluted from the swatches and quantified to determine the percent reduction from the original number of recovered bacteria from Time 0 swatches.
Method III: Antifungal Activity Assessment of Carpets Materials
Mildew and Rot Resistance of Carpet Materials Pre-wetted test carpets are inoculated with Aspergillus niger on nutrient agar plates, testing both the pile and the backing. After incubation the test pieces are examined for the presence of fungal growth and any present zones of inhibition.