Reference Make/Model: LNI Swissgas HG PRO 500 (Part # 6920.15.050) or Peak Scientific Precision Hydrogen Trace 500cc (Part # 220-94675-03) or DPS Approved Equal • Must generate a maximum of 500cc per minute of hydrogen with purity better than 99.99999%. • Must have an innovative two-column gas purification system to ensure the maximum grade of hydrogen purity. • Maintenance-free or should be limited to only replacing the de-ionizer cartridge. • Must have internal leak detection with automatic shutdown features. • Must have the ability to combine multiple units. General data: Electrolytic cell: Long life Multilayer PEM technology. Drying system: PSA (Pressure Swing Absorption). H2 purity: >99.99999% (referred to O2, dew point <-75°C (< -103°F), Atmospheric Dew Point (ADP)). Outlet pressure: between 6.9 bar (100 psi) and 12 bars (174 psi). H2 flow-rate(Max): 500.