The AFS has high capacity and efficiency levels for oxygen (750 cc, < 1 ppb), water (12 g, < 10 ppb) and hydrocarbons (8 g, < 1 ppb). The recommended flow rate is 2 L/min and 200 psi maximum operating pressure. The two part system includes a small stainless steel manifold and a high capacity filter cartridge. Can be attached to a laboratory wall or bench with brackets included. Each connection in the AFS is made with two fluoro-elastomer seals. The polycarbonate shield that surrounds the glass indicator section of the filter is sealed, so the gas flow is secure even if the glass is broken.