I am looking for a method of modifying the CO2 concentration inside a sealed container that is both precise and repeatable (C02 needs adjustment every time the container is sealed, also need to be able to make additional adjustments to counteract potential slow leaks.
Is there a way I could do this electrically? Voltage across a sample of some precursor? Coating a heating wire with something that could be gradually burnt off? I read an online article from 2016 about a type of battery that actually removed CO2 from the atmosphere and used it to generate a current (and in the process reduced the concentration) - could not tell from the article if all the parts of the battery were solid - if it were then perhaps a scaled down cell?
Very much appreciate any suggestions so I have some options.