Designed for analysis of gases, vapours and VOCs in liquids

Hiden Analytical offers class-leading gas monitoring solutions designed to obtain and quantify complex species in liquid samples. Our ultra-precision HPR-40 DSA is a compact membrane inlet mass spectrometer (MIMS) and a versatile instrument suited to dissolved and evolved species analysis. With a wide selection of compatible differential electrochemical mass spectrometry (DEMS) cells available, the HPR-40 DSA can also be tailored for precise real-time electrochemical analyses.



Membrane inlet mass spectrometry is a tried-and-trusted technique for resolving dissolved gas species from liquid samples. It is routinely employed in environmental monitoring applications such as the analysis of groundwater to quantify low-level pollutants, or recreational applications where disinfectant by-products (DBPs) could be harmful to the health and wellbeing of swimmers.

The Hiden HPR-40 DSA can monitor gas species in liquids at the sub-parts per billion (ppb) level with a standard mass range of 200 amu for dissolved species. Exceptionally precise, this bench-top membrane inlet mass spectrometer is uniquely suited to gas monitoring applications where extremely low levels of concentration monitoring are critical to success.

Want to learn about MIMS applications? Read our article Solutions for Dissolved Gas Analysis in Swimming Pools

The Hiden HPR-40 MIMS system is versatile and available with a broad range of sampling inlets addressing application with small volume samples, in denitrification studies for example.

Specialist polymer membranes, Hiden X44 provides for unparalleled sensitivity for the analysis of rare earth gases, helium, krypton and Xenon in groundwater geochronology.

The HPR-40 DEMS instrument is available for dissolved gases in electrochemistry studies, CO2 reduction for example.

Gas Monitoring with Hiden Analytical

Hiden Analytical is one of the world’s leading developers of gas monitoring solutions based on finely tailored mass spectrometry solutions. If you would like more information about the specifications of our membrane inlet mass spectrometers, or want to request a quote, simply contact us today.


  • Analysis of dissolved species with mass range 200 amu (300 amu option)
  • Sub parts per billion detection levels
  • High precision and stability species ratio measurements (e.g. marine de-nitrification studies)
  • Soil core analysis
  • Fermentation process analysis
  • Water analysis in estuary, river or reservoir
  • Groundwater contamination studies
  • Methane production control
  • Microbiological/enzyme activity studies
  • Environmental monitoring






The system is supplied with MASsoft Professional Edition software.

This Windows 8 and Windows 10 compatible software allows control of the instrument via USB 2.0, RS232 or Ethernet. Provides comprehensive I/O for data output and for reading data from external devices for integration and display with mass spectrometer data.



Palmer Station, Antarctica | Gas Analysis

Research using the Hiden HPR-40 DSA to examine the seasonal cycle of biologically produced gases in surface waters of the West Antarctic Peninsula region.

UIC University of Illinois at Chicago | DEMS

Researchers prove surprising chemistry inside a potential breakthrough battery

Critex | Dissolved Gas Analysis

In-situ measurements in groundwater and surface water

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