ASTM D255-92

1.1 This is a general method for the separation by steam distillation and the recovery of solvent and base from bituminous mixtures.

1.2 The following safety hazards caveat pertains only to the test methods described in this specification. This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.>