Objective. The objective of these recommended practices is to establish suggested standard test apparatus@ test conditions@ and procedures for use in evaluating the short term conductivity of fracture proppants under laboratory conditions@ These recommended procedures may be used to evaluate and compare the conductivity of packs of proppant samples under laboratory conditions but are not intended for use in obtaining absolute values of proppant pack conductivities under dawnhole reservoir conditions. The effects of fines@ formation temperature@ formation hardness@ resident fluids@ time@ or other factors are beyond the scope of this recommended procedure.