6. Measurement techniques and units
The equipment used to measure gas permeability is commercial or laboratory equipment based on two techniques:
gas scavenging, the most common ;
pressure rise.
6.1 Commercial gas scavengers
To this day, AMETEK, MOCON Division, remains the market leader for measuring OTR, WVTR and CO 2 TR. These devices operate on upstream-downstream pressure difference constant, imposed by dynamic purging of the downstream compartment, to drive the permeate to the specific...
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Measurement techniques and units
Contribution of leaks or perforations
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