AATCC 109:2016 pdf download.Colorfastness to Ozone in the Atmosphere under Low Humidities
1. Purpose and Scope
1.1 This test method is intended for determining the resistance of the color of textiles to the action of ozone in the atniosphere at room temperatures with relative humidities not exceeding 67%.
2. Principle
2.1 A test specimen is exposed to ozone in an atmosphere under ambient temperatures (64-82°F) and relative humidities not exceeding 67%. The cycle is repeated (1) until the specimen shows a definite color change or (2) for a prescribed number of cycles.
3. Terminology
3.1 colorfastness, n.—thc resistance of a material to change in any of its color characteristics, to transfer of its colorant(s) to adjacent materials or both, as a result of the exposure of the material to any environment that might be encountered during the processing. testing, storage or use of the material.
4. Safety Precautions
NOTE: These safety precautions are for information purposes only. The safety precautions are ancillary to the testing procedures and are not intended to be all inclusive. It is the user’s responsibility to use safe and proper techniques in handling materials in this test method. Manufacturers MUST he consulted for specific details such as material safety data sheets and other manu hicturer ‘s recommendations. All OSHA standards and rules must also be consulted and followed.
4.1 Good laboratory practices should be followed. Wear safety glasses in all laboratory areas.
4.2 Manufacturer’s safety recommendations should be tbllowed when operating laboratory testing equipment. To protedI the eyes further, do not look at OZOflC generator while it is operating.
10. Report
10.1 Report the numerical grade for the change in color of each test specimen. the number of cycles run and the temperature and relative humidity at which the test was performed.
11. Precision and Bias
11.1 Precision. Precision for this test method has not been established. Until a precision statement is generated for this test method, use standard statistical techniques in making any comparisons of test results for either within-laboratory or between-laboratory averages.
11 .2 Bias. Colorfastness to OZOfl in the atmosphere under low humidities can be defined only in terms of a test method. There is no independent method for determining the true values. As a means of estimating these properties, the method has no known bias.AATCC 109 pdf download.