The POROLIQ™ is a liquid-liquid porometer (LLP) that determines pore sizes based on the pressure step stability method. This means that a data point is only accepted on the condition that the user-defined stability algorithms for pressure and flow are met.
Widely regarded as the most accurate liquid-liquid porometer on the market – The POROLIQ™ is very well suited to detect very small pores, as well as to characterize pressure sensitive membranes such as hollow fibers.
The instrument will first detect the opening of a pore at a certain pressure but will wait until all pores of the same diameter are completely opened before accepting the data point. This method results in a very accurate pore size measurement, down to 2 nm, and allows to calculate the true pore size distribution.