AATCC 101:2019 pdf download.Test Method for Colorfastness to Bleaching with Hydrogen Peroxide
1. Purpose and Scope
1.1 This test method is intended for evaluating the resistance of the color of textiles of all kinds except polyamide, in all forms, to the action of bleach baths containing hydrogen peroxide at concentrations commonly employed in textile processing.
2. Principle
2.1 A specimen of the textile in contact with specified white cloths is immersed in the bleaching solution, rinsed and dried. The change in color of the specimen and the staining of the test cloths arc evaluated.
3. Terminology
3.1 colorfastness, n.—the 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 precautions are ancillary to the testing procedures and arc 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. Manufachirers MUST be consulted for specific details such as material safety data sheets and other manufacturer’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 In preparing bleaching baths, use appropriate personal protective equipment while handling hydrogen peroxide (35%) and sodium hydroxide concentrates. Chemical goggles or face shield, rubber gloves and rubber apron should be worn during preparation steps involving these materials.
4.3 An eyewashisafety shower should be located nearby for emergency use.
4.4 Usc proper protective equipment, such as gloves and metal tongs. during handling of hot sample tubes.
4.5 Exposure to chemicals used in this procedure must be controlled at or below leveLs set by governmental authorities.AATCC 101 pdf download.