GTR, gas transmission rate, is the rate at which a specified gas permeates through a stated area of a specimen under certain time period, pressure and temperature condition.  OTR, oxygen transmission rate is the rate at which oxygen transmits through a stated area of a specimen under certain time period. The above mentioned transmission can [...]

Gas Permeation Tester is applicable in the measurement of gas permeability rate, solubility coefficient, diffusion coefficient and permeability coefficient at various temperature of plastic films, laminated films, high barrier material, sheets, foils and rubber, including breathable film and tyre seal performance, etc. Gas Permeation Tester conforms to ASTM D 1434, ISO 2556, ISO 15105-1, JIS [...]