Performance Rating using the AATCC 193 Test Method
A modified AATCC 193 test method is used to quantify the chemical splash resistance. This method uses an A through D rating scale to rate the interaction of water and water/alcohol mixtures with the fabric surface. In the test, the fabric is held on a flat surface and the test droplet is placed on the fabric. A rating is assigned after 10 seconds. An “A” rating corresponds to no interaction with the fabric while a “D” rating designates complete wicking of the solvent across and through the fabric. Ratings “B” and “C” are intermediate designations. The image below shows examples of each rating.
“A” and “B” ratings indicate that the fabric would possess a resistance to penetration following inadvertent chemical splash.
There are countless liquid chemicals and combinations thereof that could be tested and rated according to the AATCC 193 test method. A finite list of challenge chemicals was selected, including those from the ASTM F1001-12 method. These challenge chemicals are designed to represent a broad range of chemical classes, hazards, and physical characteristics, and although they have been tested, do not represent a complete list of chemicals that are used in a laboratory environment.
The ratings at the right were recorded.
Chemical exposure may affect future chemical and flame resistant properties. Careful consideration should be taken to replace the effected garment in accordance with the user’s standard safety protocol. For other chemical and chemical combinations it is recommended that, before use, a challenge droplet be applied to the fabric and rated according the AATCC 193 test method in a controlled manner.