Calibrated permeability check plugs

Description
Model 1: Set of 5 plug sized permeability check plugs
The check plugs are used to check and test the calibration of gas permeameters. The set consists of five stainless steel check plugs with different permeability to air. The sensitive porous material is protected by a metal ring. These calibration plugs are not primary standards and have been tested using customary testing methods.

Model 2: Ultra perm check plug
The ultraperm check plugs are used to check and test the calibration of gas permeameters that test very high permeability samples. The sensitive porous material is protected by a metal ring. This calibration plug is not primary standard and has been tested using customary testing methods.

Model 3: Micro perm check plug
The microperm check plugs are used to check and test the calibration of gas permeameters that test very low permeability samples. The sensitive porous material is protected by a metal ring. This calibration plug is not primary standard and has been tested using customary testing methods.

Model 4: Set of 5 full sized permeability check plugs
The set consists of five check plugs with different permeability to air. Each plug is designed to be used with full sized core holders.