The Parker Balston AA Gas Purifier is a completely engineered, wall mountable system designed to purify gases commonly used with Atomic Absorption Spectrophotometers. The Purifier consists of two independent filtration systems. The first system is designed to purify the compressed air (oxidant) with two stages of high efficiency coalescing filtration. These filters will remove all oil, water, and particulate matter down to 0.01 micron. The second filtration system is designed to purify the acetylene gas. This system emoves liquid acetone and solid particulate from the gas. The Model 73-100 protects the microcomputer gas controls and AA burner assembly from contamination and corrosion. In addition, the acetylene filter has an integral flashback arrestor, meeting all OSHA requirements to enhance the safe operation of the spectrophotometer.