How Hydrogen Gas Generator Works? Nitrogen gas is used for thousand of different manufacturing and packaging applications. Nitrogen gas generators are necessary for any business and it delivers nitrogen to your site is often expensive and unsafe. This issue is resolved with a nitrogen generator, which generates up to 99.9% pure, medical-grade nitrogen gas inside your lab. These devices are perfect for feeding desiccator cabinets, glove boxes, vacuum chambers, and more with a steady stream of nitrogen gas!