Sodium Bicarbonate also known as baking soda is commonly used as a mild base to neutralize acidic spills regulate pH levels and counteract the effects of certain acidic toxins in the body. It also acts as a leavening agent by generating CO when reacts with acidic ingredients like vinegar or lemon juice.

Contactless conductivity sensor employing moist paper as absorbent for in-situ detection of generated carbon dioxide gas.