API 27 : 3ED 52(R1956)
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
RECOMMENDED PRACTICE FOR DETERMINING PERMEABILITY OF POROUS MEDIA
07-23-2013
01-12-2013
To help with comparisons and coordination of permeability measurements in laboratories by adoption of uniform notation and dimensionally equivalent units. Also to identify and to define conditions of test and sources of error encountered not to standardize detailed measurement technique
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