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High Throughput Gas Separation (HTGS)




The new High Throughput Gas Separation (HTGS) system is a device designed to run up to 16 different membrane-based separations of variable single and mixed gas feeds simultaneously. Up to 5 gases (O2, CO2, CH4, N2, and H2) can be mixed at a set flow. The on-line analysis option permits screening mixed gas selectivities, in comparison to single gas permeation experiments.

Key Differences

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  • Fully automated: all parameters are set and the system runs the processes autonomously

  • Feed and purge lines minimize the ‘dead volume’ between separation and analysis

  • Control of feed composition, pressure, temperature, and flow rates

  • Automatic selection of feed or permeate line to be analyzed

  • Complies with the latest safety standards regarding Cabinet construction
    Tubing design
    Component selection
    Software security functions
    Gas edit surveillance and according to alarms

  • CE marked: conformity with valid EU guidelines and directives.


The HTGS is sold as a complete package, including:

  • Permeation cell module for 16 flat sheet membrane samples: Each sample position is provided with a porous metallic support grid and O-rings to ensure tight sealing
    Individual adjust of different sample thickness
    Retentate purge system to ensure homogenous feed composition throughout the entire experiment
    Optional heating of the module is available

  • Control devices

  • Compact gas chromatography (CGC) equipped with two thermal conductivity detectors (TCD), which can analyze gases at ppb level, and three columns: Parabond Q (2 m x 0.32 mm): used as pre-column
    Molecular sieve column (5 m x 0.32 mm): for the detection of H2, O2, and N2 at the first TCD
    Parabond Q (12 m x 0.32 mm): for the detection of CH4 and CO2 at the second TCD

  • Integrated software for the measurement setup, mass flow control, measurement of the flux, and triggering of the CGC

  • Electrical cabinet

  • A vacuum pump for evacuation of all gases into a fume hood


  • LabVIEW software for data acquisition and instrument control with an intuitive selection of all analysis parameters

  • Universally available PLC technology (National Instruments) with its own runtime system

  • Integrated reporting: easy export of results to Excel, Word and pdf file

  • Windows compatible

  • The advanced service menu facilitates diagnosis and service via the Internet


Each individual hollow fiber sample is placed inside a stainless steel tube and secured by gluing the ends of the fiber to the tube ends.

Each tube assembly can be mounted individually on the bottom part of the standard flat sheet sample holder of the HTGS. The gas flow direction during the experiment is from the inside to the outside of the hollow fiber. The upper part of the tubes is attached to a top plate. A gas reservoir for the feed gas mixture guarantees a uniform composition before it goes through the membrane.

Each individual tube has a permeate collection line that can be directed to either the compact gas chromatograph of the HTGS (for analysis of the composition) or to the permeability measuring line. The gas retentate mixture can also be analyzed.

  • Maximum operating pressure allowed with the hollow fiber membrane module: 10 bar

  • The maximum effective length of the individual hollow fibers inside the tube: 120 mm

Technical Specification

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Pressure Range: 0-35 bar

Flow Range: 0-10 l/min for individual gases
up to 30 l/min for gas mixtures

Temperature range: maximum 80 ºC

Individual sample area: 2.24 cm²

Resolution (pressure and flow sensors): 24 bit

High Throughput Gas Separation (HTGS)


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