AATCC Perspiration Tester uses compound specimen to soak in artificial perspiration resolution (Separately in Acid and alkali) completely, natural dry for 30minutes, and then use this tester to apply a constant pressure, then put it in 37°C drying oven for 4 hours, take out specimen, make it dry, compare with gray scale to evaluate the perspiration-resistancelevel (suitable for all kinds of fiber).