Test Method 129-2011
under High Humidities
Developed in 1962 by AATCC Committee RA33
1. Purpose and Scope
1.1 This test method is used for determining the resistance of the color of textiles to the action of ozone in the atmosphere at elevated temperatures with relative humidities above 85%.
A test specimen and a swatch of control sample are simultaneously exposed to ozone
in an atmosphere which is maintained at 87.5 ± 2.5% relative humidity and a temperature
of 40 ± 1°C (104 ± 2°F) until the control sample shows a color change
corresponding to that of a standard of fading. The cycles are repeated until
the specimen shows a definite color change or for a prescribed number of cycles.
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