Porous Materials Inc. (PMI) is a U.S.-based manufacturer and service provider specializing in porosity, permeability, and pressure measurement technologies. The company designs and produces advanced instrumentation used to characterize porous materials and to perform precise pressure control, calibration, and leak testing across a wide range of industries.

PMI’s product portfolio includes porosimeters, permeameters, automated pressure systems, pressure calibration equipment, burst and leak testers, and customized measurement solutions. These instruments are used in research, quality control, and production environments to evaluate materials such as membranes, filters, batteries, medical devices, ceramics, metals, composites, and other engineered materials.

In addition to manufacturing equipment, PMI provides testing services and technical support, helping customers obtain accurate material characterization data and develop application-specific testing methods. The company emphasizes measurement accuracy, automation, and repeatability, supporting both laboratory research and industrial process requirements.

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