The Permatran is used to measure the transmission rate of gases through a barrier material. To achieve accurate measurements, a known concentration of test gas, typically 100% water vapor, is introduced on one side of the barrier, while the other side is swept with a water vapor-free carrier gas, which is usually nitrogen. The barrier material, often a film, is placed between the two parts of a test cell, and the sealing surfaces and O-rings in the cell ensure that outside air does not influence the measurement.

• Controlled test environment
• Removable cartridge and test cells
• Integrated and intuitive touchscreen operator interface
• Fast changeover from Wet to Dry testing
• Pneumatically clamped test cell
• Automatic Test Sequencing (perform a sequence of tests at different RH and temperatures).