Use compound specimen to soak in artificial perspiration resolution (separately in acid and alkali) completely, natural dry for 30 minutes and then use this tester to apply a constant pressure, hen put it in 37℃ drying oven for 4 hours, take out specimen, make it dry, compare with gray scale to evaluate the perspiration – resistance level ( suitable for all kinds of fiber).
Hard plastic board: 115 x 63 x 3mm thickness, 21 pieces. 1. Load weight: G101LB. 2. Dimension: G20 x 8 x 20cm. 3. Weight: G 7kg.