A laboratory gas generator is an on-site unit that delivers a continuous supply of purified gas directly to a system that requires the use of that particular gas. Different generators may purify gas already present in the atmosphere, such as nitrogen and oxygen generators, may use electrolysis to generate hydrogen from water, or other methods to produce a variety of gases. Instruments that would particularly benefit from gas generators include gas chromatographs, GC-MS, FTIR, ion mobility spectrometer, gas analyzer, environmental chamber, or applications requiring clean, dry gas. UMass recommends the use of gas generators for applications, as they have many benefits in comparison with gas cylinders. Always contact EH&S (firstname.lastname@example.org) to discuss options prior to purchasing or installing a gas generator.