soda lime

The scrubber capacity is 2.5 kg of soda lime.

Methane can also be produced by the destructive distillation of acetic acid in the presence of soda lime or similar.

An indicating dye in the soda lime.

It changes the colour of the soda lime after the active ingredient is consumed.

As this is absorbed by the soda lime, air is sucked in from the U-tube to keep the pressure constant, displacing the liquid.

The device recycled the breathing gas by using a counterlung containing soda lime to scrub carbon dioxide.

Well, that's okay for space stations or ships or frogmen; they run air through soda lime to take out carbon dioxide, and breathe it again.

Did you find a canister of soda lime for the rebreather's CO2 scrubbers?

You could also trap it onto a chemical adsorbent, such as Ascarite of soda lime, and weigh the charged sorbent.