It is used to measure the permeability of production molds and cores in AFS permeability units, and to check AFS 2 x 2-in. (50.8 x 50.8 mm) diameter specimens of known permeability, in the specimen tube. The mold permeability test correlates with casting quality, while the lab permeability test is a gauge for sand comparison and for determining any change in the venting power of the sand itself.

Specifications:

Net weight 2 lb. (0.9 kg)