The permporometer porometer measures the pore size distribution of materials using the ‘Kelvin equation’. The Kelvin equation describes the change in vapor pressure due to a curved liquid–vapor interface (pore). The Kelvin equation is dependent upon thermodynamic principles and does not allude to special properties of materials.
POROPERM™ is a permporometer for the measurements of pore sizes in the range between 1 nm and 50 nm at low pressures. It is based on the controlled stepwise evaporation of the liquid blocking the pores (condensable gas) and the simultaneous measurement of the flow rate of an inert gas through the sample, at a constant temperature.
Standard pressure range
The POROPERM™ 1000 comes with a flat sheet membrane cell (total area ~4 cm2). Smaller/larger and special sample holders are available on demand.
Advanced service menu facilitates diagnosis and service via Internet.
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