" />The water vapor transmission rate measures how much moisture passes through the geomembrane over time.
Test Method
The specimen seals a dish holding desiccant. The dish is weighed at intervals; the weight gain shows moisture passing through. Lower transmission means better barrier performance.
Why It Matters
This test reflects the liner's moisture barrier, important for landfills, ponds, and vapor control. We provide test reports. See our product page or contact us.
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