Color fastness to dry cleaning
Dry Cleaning Fastness:
Sew the sample with 12 steel plates in to a cotton bag (10 x10 cm), place in a stainless steel beaker of 550ml volume and treat with 200ml perchloroethylene for 30 minutes at 30C in the Launder-O-Meter. Then remove the test sample, squeeze or hydro extract and hang to dry in warm air at 60C.
'Change of shade', 'staining' of the solvent with Grey Scale 'staining' will be assessed.