以一定之荷重摩擦有色试片后，对照灰色标，评定染色摩擦坚牢度等级。亦可做为有机溶剂之摩擦试验。 Rub the test pieces in a certain load, the control of grey evaluation standard, dyeing abrasive firmness.It can also be used as an organic solvent for friction test.