Extrans Permeation Measurement System

Many applications in science and industry require an apparatus that creates a controlled amount of a fluid introduced into another fluid. For instance, some material corrosion testing applications require such an apparatus to determine the reaction of a material over time upon exposure to a controlled corrosive vapor-gas mixture. Tests typically are performed using a higher vapor concentration of the vapor-gas mixture in an effort to decrease the duration of the test. Data are then extrapolated to model the material’s reaction over time. However, because the results are extrapolated, any error caused by an imprecisely controlled vapor-gas mixture will be magnified. Thus, an apparatus that creates a controlled testing environment with a gas having a precise flow rate and a precisely controlled vapor-gas mixture is critical to ensure the accuracy of these types of tests.