... instrument) 2) Test the oxygen transmission rate of film or flexible barrier material Oxygen Permability rate Tester – Coulometry theory ... 7126 ; GB/T 19789-2005, Function:To test package oxygen transmission rate. Application :* Filmsrigid films, shrik films, stretch ... :1, Automatic test, use friendly,2, High-precision sensors with over-range protection, continuous data collection, accurate and ...