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Palladium Hydrogen Purifiers - PS7-PD05 (0 - 50 slpm)
Palladium Hydrogen Purifiers - PS7-PD05Palladium Hydrogen Purifiers - PS7-PD05
SAES Pure Gas micro-channel palladium purifiers produce ultra-high-purity hydrogen (99.9999999%). All purifiers use patented micro-channel palladium membrane technology to remove all impurities to parts-per-trillion levels. The compact PS7-PD05 purifier is ideal for low flow rate university, laboratory, and industrial applications. The hydrogen purifier can be installed downstream of compressed cylinders or generators.

How it Works

Purification of hydrogen by palladium (Pd) membrane diffusion is the accepted technology for applications requiring parts-per-billion gas purity. Palladium acts as a catalyst, causing hydrogen gas molecules to dissociate into atoms upon contacting the membrane surface. The atoms are small enough to diffuse through the palladium membrane, driven by differential hydrogen pressure across the membrane. The hydrogen atoms recombine into molecules after passing through the membrane. Hydrogen purifiers operate at approximately 400C. At this temperature, hydrogen atoms readily diffuse through the membranes. No other material can diffuse through palladium and so the permeate is only hydrogen.
Impurities including H2O, O2, N2, CO2, CO, hydrocarbons and rare gases remain on the inlet side of the membrane and are continuously purged through a bleed connection. The unique properties of palladium provide a solid barrier with no breakthroughs as compared to catalysts and getters that rely on chemical reactions on reactive surface areas.

Palladium Advantages

  • Only Hydrogen passes through to the pure side - the purest gas
  • Every impurity is removed - no exceptions
  • Unlimited lifetime - no regeneration or vessel replacement
  • Separates pure H2 from source gas with ppm or % level impurities
  • Easy to verify performance with in-situ helium leak test


  • Gas chromatography (GC)
  • Analytical instrument zero/carrier gas
  • GaN epitaxy
  • Silicon carbide (SiC) epitaxy
  • Carbon nanotubes
  • Metallurgy
  • Fuel cells

Key Features

  • Ultra-pure hydrogen from any source
  • Automatic N2 purge valve
  • Outlet check valve to prevent back diffusion
  • Boost bleed valve for quick bleed line purging
  • Electrical cabinet purge
  • PLC controller with 5.0" color touch screen
  • High/Low temperature alarms
  • CE Marked

Model Number Typical Flow Data Sheet Flow Curves
PS7-PD05-08 5,5 slpm Datasheet Flow Curve
PS7-PD05-21 12,5 slpm Datasheet Flow Curve
PS7-PD05-50 28,4 slpm Datasheet Flow Curve

Palladium Hydrogen Purifier PS7-PD1 Flow rate 50 - 1085 slpm

Palladium Hydrogen Purifier PS7-PD2 Flow rate 1085 - 2170 slpm

© 2021 Rainer Lammertz