1.1 This method covers a semiquantitative procedure for determining the relative plastic behaviour of coal when heated under prescribed conditions in the absence of air. The test may be used when studying coals and blends used in carbonization and in other situations where plastic properties are of practical importance.
PS 1500-1981 history
1981PS 1500-1981 METHOD OF TEST FOR PLASTIC PROPERTIES OF COAL BY GIESELER PLASTOMETER