Determination of fixation; dried or steam-solid colour of fabric, washed before and after-like celaenopsidae, adsorprion with dimethyl formamide (1: 1) boil a 12-minute, liquor ratio 1: 20 lyogen, baking to absolute dry, metage and soluble in sulfuric acid, colorimetric determination content, obtainsthe fixation. The following references to the literature [12] test test method, and the same.
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