leakage testing apparatus for flexible and semi-rigid packages; seal testing apparatus for flexible and semi-rigid packages; instrument for measuring water vapor transmission, namely, water vapor transmission rate analyzer; electronic and electrochemical devices for measuring concentrations of gases in flexible packages

Leakage testing apparatus for flexible and semi-rigid packages; seal testing apparatus for flexible and semi-rigid packages; instrument for measuring water vapor transmission, namely, water vapor transmission rate analyzer; electronic and electrochemical devices for measuring concentrations of gases in flexible packages