The Environics Series 7000 Zero Air Generators are pure air generator systems that are capable of continuous delivery of up to 20 standard liters per minute (SLPM), 30 pounds per square inch (PSI) of dry, contaminant-free air. The ZAG will produce ultra high purity zero grade air either from an existing compressed air source or as a powerful stand-alone unit. The air is a perfect method for generating zero reference calibration gas, ultra-pure combustion air for flame ionization detector, service air for pneumatically operated valves, hydrocarbon free chromatography use and general laboratory use. The output from the ZAG provides a stable and repeatible air supply for comparable results regardless of location making it ideal for mobile lab. Using a generator also removes the need for gas cylinders, making it more convenient, safer and less expense. The Zero Air Generator includes a color-changing moisture indicator to alert you to the presence of water vapor. If water vapor is present, the indicator will change from white to blue. When the water vapor is removed, the indicator will revert to its white color. The ZAG also includes with dual pressure regulation for enhanced performance.