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Gas Permeameter

November 30, -0001

The C-522 Gas Permeameter, developed by Porous Materials Inc. measures pressure difference and flow rates in the ranges recommended by ASTM. Resis­tance characteristics are computed from measured values. A number of characteristics of the acoustical material, including specific air flow resistance (rayl), airflow resistivity (rayl/m) and airflow resistance (ohm) are reported. www.pmiapp.com