What is Pressure Swing Adsorption (PSA)? Clean, dry compressed air is fed into the first molecular sieve bed. Nitrogen is adsorbed, while oxygen is allowed to flow through. When the sieve in the first bed becomes full of nitrogen, the airflow is then directed into the second bed. As the second bed separates the oxygen from the nitrogen, the first bed vents its nitrogen into the atmosphere. Compressed air is once again fed into the first bed, and the process is repeated continu- ously. A constant flow of oxygen is reliably produced. "OGSI designs Oxygen Generating Systems Intl. Division of Audubon Machinery Corporation 814 Wurlitzer Drive • North Tonawanda, NY 14120 Toll Free in US & Canada: (800) 414-OGSI (6474) Certified Veteran Owned Small Business. First LEED Certified Green European Conformity OGSI Systems Intl. "OGSI designs Ak Oxygen Generating Systems Intl. ^IT Division of Audubon Machinery Corporation Toll Free in US & Canada: (800) 414-OGSI (6474)

contained oxygen generators that extract oxygen from the air and deliver it to an 3%). The units are completely self- contained and produce up to 20 SCFH (9 dependable, reliable, and virtually main- tenance free for continuous service. The Model OGS-20 oxygen generator uses Pressure Swing Adsorption Technol- ogy (PSA) to deliver a constant flow of up to 20 SCFH (9 LPM) of medical grade oxygen at a pressure of up to 90 psi. Ideal for Veterinary Clinics/Offices, the unit is equipped with a lighted on/off switch, hours meter, custom flow gauges and controls. The OGS-20 is truly user-friendly. OGSI...