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Fuel Cell Exchange Film Hitrogen Permeability Testing Machine Plastic Membrane Lab Test ApparatusEquipment - Testing / Measuring - SYSTESTER Instruments Co.,Ltd - China - October 10, 2019 - 100.00 Dollar US$Fuel Cell Exchange Film Hitrogen Permeability Testing Machine Plastic Membrane Lab Testing Apparatus Product Details Application： OTR-1901 is based on the coulometric sensor method and available for the OTR test of flexible films, sheeting and packag...