The Science Behind How Nitrogen Gas Generators Operate Kumar Jeetendra | May 8, 2024 Principles of air separation and purification are the basis of how nitrogen gas generators work to produce high-purity nitrogen gas. There are two main types of technologies used in nitrogen gas generators such as Pressure Swing Adsorption (PSA) and membrane separation. Here is a look at the science behind each technology: Pressure Swing Adsorption (PSA): …