required equipment:
SGS U.S. dry cleaning and washing machine #6523
wringer
次氯酸钠（含量约5%）
氯化钙CaCl2
6水氯化镁 MgCl2. 6H2O
测试布Test contral fabric 162
6N 硫酸H2SO4 6N，
12% 碘化钾KI 12%
淀粉 1%
0.1N硫代硫酸钠Na2S2O3 0.1N
去离子水或蒸馏水Distilled or deionized water
碳酸钠Na2CO3
醋酸CH3COOH
溶液 A: 8.24g CaCl2 + 5.07gMgCl2 . 6H2O 溶解成 1L溶液.
溶液 B: 取51ml A稀释成5100ml, 加入0.5ml 次氯酸钠.
用 KI 和 0.01N Na2SO3 溶液B使活性氯为5ppm.
用碳酸钠或醋酸调节溶液B的Ph为7.0
1. take B 5000ml in the machine and then put specimen(including contral
fabric) 5.0g, T=21'C running 60min.
2. take out: squess and rinse and squess and dry in room temperature.
3. check contral fabric, the color change should be 2-3 or 3, otherwise, the
test is failed.
4. assess the specmen color change.
Specmen size is 6X6cm, different color specmen can be mixed using testing.