1.1 This specification covers drycleaning-grade perchloroethylene suitable for use in the drycleaning industry. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this sta This specification covers dry cleaning-grade perchloroethylene suitable for use in the dry cleaning industry. Materials shall be tested and the individual grades shall conform to specified values of appearance, water content, residual odor, specific gr