Point of use Purifiers:

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.

Model Number	Typical Flow
PS7-PD05-08	5.5 slpm
PS7-PD05-21	12.5 slpm
PS7-PD05-50	28.4 slpm

Typical Flow at 200 psig inlet pressure, 60 psig outlet pressure. Higher flow available with lower outlet pressures.

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 400°C. 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, CO, CO₂, CH₄/THC, N₂, He, and Ar 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.

Key Features

Ultra-pure hydrogen from a variety of sources
Automatic N₂ purge for cell protection
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

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

Applications

Gas chromatography (GC)
Analytical instrument zero/carrier gas
GaN epitaxy
Silicon carbide (SiC) epitaxy
III/V and II/VI MOCVD
Carbon nanotubes
Metallurgy
Fuel cells

Ordering Information

Model Number	Voltage
PS7-PD05-08-1	120 VAC
PS7-PD05-08-2	230 VAC
PS7-PD05-08-3	230 VAC (UK Plug)
PS7-PD05-21-1	120 VAC
PS7-PD05-21-2	230 VAC
PS7-PD05-21-3	230 VAC (UK Plug)
PS7-PD05-50-1	120 VAC
PS7-PD05-50-2	230 VAC
PS7-PD05-50-3	230 VAC (UK Plug)

For more information, click here to view the Brochure pdf.

For more information, click here to view the datasheet pdf.

For more information, click here to view the datasheet pdf.

For more information, click here to view the datasheet pdf.