Patent ID: 7047832

Claim:
A high precision low cost manometer for measuring gas exchange comprising: a container having a port for holding a liquid medium and a reactant that interacts with said liquid medium to produce a change in gas levels within said container; a removable stopper for insertion into said port creating an airtight seal; a tube extending through said stopper into said container having a distal end for being submerged in said liquid medium; said tube adapted for receiving said liquid medium and monitoring a change in the level of said liquid medium within said container as a result of gas exchange; a controller extending through said stopper into said container for setting said liquid medium at a level within said tube; and, wherein said controller is operable to direct the liquid medium into said tube to a desired level so that a change in gas levels caused by the interaction of said reactant with said liquid medium can be monitored through a change in the level of the liquid medium within said tube.