Frequently Asked Questions

The HPR-40 DEMS Membrane Inlet Mass Spectrometer System is used for in situ mass resolved determination of gaseous or volatile electrochemical reactants, reaction intermediates, and products in real time.

The HPR-40 DEMS system features a replaceable nanoporous membrane, 4 ports for additional electrodes, and an interface to the Hiden HPR-40 DSA mass spectrometer.

The HPR-40 DEMS system can be used for applications such as soil core analysis, fermentation process analysis, water analysis, groundwater studies, methane production control, microbiological/enzyme activity studies, and environmental monitoring.

The HPR-40 DEMS system has a mass range of 200 amu (with a 300 amu option).

The typical enrichment factors for dissolved species using the HPR-40 DEMS system are: CO2 - 12.0, CH4 - 3.2, C3H8 - 13.6, CH3OH - 46.4, SO2 - 50.0, C3H6O - 19.6, C6H5CH3 - 30.4.

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