Gas Separation Membrane Testing: Why Mixed-Gas Data Matter

At a glance. Most new gas separation membranes are first reported with pure-gas permeance. In real feeds, CO2 plasticises polymers and competing gases cut selectivity. The Tech Inc. Gas Separation Membrane Permeation Test System blends feeds with mass flow controllers and measures permeate composition, so results reflect real operation.

What to look for in a test system

• Mass flow control for each gas, so feed composition is exact.

• Heated cell up to 150 °C, because temperature changes permeance strongly.

• Back-pressure and sweep control on the permeate side.

• Analyser or GC port for mixed-gas selectivity.

• Time-lag option for diffusion and solubility coefficients.

Where it pays back

CO2 capture, biogas upgrading, hydrogen recovery and nitrogen generation all depend on selectivity under real conditions. Screening materials this way avoids surprises at pilot scale.

Frequently asked questions

Flat sheet or hollow fibre? Both: the system takes a flat cell or a module holder.

Which gases? H2, He, CO2, CH4, N2, O2 and blends; others on request.

Ask mail@techincresearch.com for a configuration.