Dr. Krishna Gupta founded Porous Materials, Inc. in 1978 for the development and manufacturing of sophisticated and fully automated porosimeters for characterization of pore volume of porous materials.
Since then the company has grown considerably. PMI currently holds many US and international patents on novel technology for characterization of pore structure, has six product lines (Porometers, Permeameters, Intrusion Porosimeters, Extrusion Porosimeters, BET/Sorptometers, and Pycnometers), manufactures over thirty different instruments and many custom instruments, houses a contract testing laboratory with an international reputation, and has a consulting group that takes pride in finding solutions to the porosity problems of companies.