Capillary Condensation Flow Porometer is designed to measure the pore diameter, gas permeability and flow rate distribution of nanopore samples. The steam passes through the sample in the sample chamber, increasing the pressure of the steam until the steam is condensed in some pores. Then stop the steam flowing through these pores. The pore size is determined by the pressure of  steam condensed in the pores. The pore distribution is determined by the steam flow rate produced by the small pressure gradient.

The apparatus is kept at the required temperature, and the steam of the known volume is introduced into the sample chamber until the steam pressure system reaches the equilibrium. The condensed pore diameter is calculated from the final pressure. Add a small amount of steam on one side of the sample in the sample chamber to increase the pressure of that side, about 10%, and monitor the pressure decline by time. Under the maintained stem pressure, the flow rate that the gas without condensed liquid passes through sample pores is calculated according to the time rate of pressure change. The flow rate distribution can be calculated through the repetitively confirmed flow rate under a certain amount of steam pressure.

Features
· No worry about the adverse effects of the samples under high pressure and extreme temperature. This technology is easy to assess fragile samples with small pores.

 Technical Parameters
 

Items	Parameters
Pore size range	0.2~0.0005μm
Pressure	15psi
Resolution	1 in 60000
Accuracy	0.15% of reading
Flow rate	Low, 10-4 cm3/s
Power supply	110/220VAC，50/60Hz (others applicable)