AATCC 100 Assessment of Antibacterial Finishes on Textile Materials

Purpose of Test

The AATCC 100 test method is a carrier-based test method used to evaluate the antibacterial activity of treated finishes on textile materials. This method is generally used to substantiate antibacterial properties of treated fabric for non-public health related claims. The method, although designed for fabric, may be modified to evaluate a variety of treated materials.

Summary of Test

In this method, treated test samples and untreated control samples are inoculated with a representative test organism, commonly Staphylococcus aureus and Klebsiella pneumoniae. The test organism is allowed to expose to the test material at an elevated temperature, typically for 24 hours. Following exposure, the samples are neutralized and quantitatively assayed for survivors. The resulting plates are incubated, the number of survivors is enumerated and a percent and log10 reduction is determined for the treated test material as compared to the untreated control material. No regulated reduction limits currently exist for general antibacterial claims made using this method.