Balston UHP Zero Grade Air Generators produce up to 280 Lpm of hydrocarbon-free air from existing compressed air supply, allowing gas cylinder users to supply, control, and automate gas supplies. Zero air purity exceeds cylinder gas quality as hydrocarbon content is less than 0.05 ppm and is measured as methane. Units are suited for supplying air to LC mass spectrometers, analytical instruments, and vehicle emission test benches.