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A permeameter is a device used to measure the rate at which water or water vapor can flow through a porous membrane such as a filter. They are able to carry out such measurements at a range of humidities, temperatures and pressures to simulate various operating conditions.
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NER's TinyPerm II is a portable hand-held air permeameter used for measurement of rock matrix permeability or effective fracture apertures on outcrops and at the core scale.
Hydraulic conductivity and soil sorptivity are quickly calculated from water flow rates measured from two constant head levels using the HM-127 Permeameter.
Laboratory equipment of analytical degree, used to measure the gas permeability from cylindrical rock samples, its measurement principle is Darcy’s Law for linear flow in compressible fluids.
Labthink’s i-Hydro 7300 water vapor transmission rate tester, operated on gravimetric method, is used for testing water vapor transmission rate of sheeting, building materials, composite films, pharmaceutical materials and plastic films.