Bubble-point with gas permeation

4 Bubble-point with gas permeation wet and dry flow method) 

The bubble-point method gives only limited information and a another method was developed that combines the bubble-point concept with the measurement of the gas flow through the emptied pores. Here at first the gas flow is measured through a dry membrane as a function of the pressure and generally a straight line obtained (see figure IV - 8). Then 

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