Competely and averagely soak specimen into acid and alkaline artificial sweat liquid for 30 minutes. Use the meter to press it then put into oven at temperature of 37°C for 4 hours. Take out specimen from oven to appraise grade of dry-endurance against comparision of grey scale mark after dry. 规范 Specification: JIS (A) 压克力板 Acrylic plate: 155×63×1.5~3mm(D) 试片 Specimen: 60×60 mm 荷重 Load: 4.6 kg 规范 Specification: JIS (B) 压克力板 Acrylic plate: 155×63×1.5~3mm(D) 试片 Specimen: 40×100 mm 荷重Load: 5.1 kg 体积 Dimension(W×D×H): 16×8×25 cm 重量 Weight: 8 kg