CSI-125 (Mason Jar Assembly )
The Mason Jar Test Device is used for measuring the resistance of nonwovens, particularly those used in surgical applications, to the penetration by aqueous sodium chloride solution under a hydraustatic pressure.

The apparatus includes:

A custom made Transparent glass Jar of about 946 cubic centimeters volume capacity. Features a large top opening and cap, and a smaller opening with stopper at the bottom.
Mason Jar Special Stand
Glass Plate
Mirror
Circular Sample Cutter – 68.3 mm

Reference:
IST 80.5-92