| Dachang Instruments Co., Ltd. |
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| Use 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¢XCdrying 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) |
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