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HPR-40 DEMS.

A modular benchtop or mobile cart mounted system for analysis of dissolved species in electrochemistry, with differential electrochemical mass spectrometry cell inlets.

100% to 100 ppb
Detection limit
300 amu
Maximum mass range
<100 ms
Response time
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Hiden HPR-40 DEMS
HPR-40 DEMS · Gas analysis

Overview.

Differential electrochemical mass spectrometry is a technique that allows online analysis of gaseous and volatile products from electrochemical reactions. The Hiden DEMS system combines electrochemical half cells with mass spectrometry.

The system configuration is a benchtop gas analysis system for electrochemistry, including ECL-Static and ECL-Insight cells and a Hiden HAL 201 RC mass spectrometer with Faraday/electron multiplier detector, with a mass range of 200 amu.

For applications where online electrochemical MS (OEMS) from an existing cell or reactor is required, a range of standard inlet options is available, offering both evolved off-gas and dissolved species analysis solutions.

Typical applications

Differential electrochemical mass spectrometry (DEMS)Fuel cell diagnosticsCO2 reductionCatalyst evaluationCorrosion studiesBattery research

Key Features.

  • Versatile mass spectrometer system compatible with multiple cells and inlet types
  • Near-instantaneous time response, with direct electrode-to-MS connection for rapid, quantitative product detection
  • Mass scanning, and time/intensity trend monitoring of multiple species
  • Deposition compatible working electrodes
  • Data synchronization within a single software package
  • Turnkey solution

Specifications.

Analyzer
Hiden HAL 201 RC mass spectrometer with Faraday/electron multiplier detector
Mass range options
200 amu standard, 300 amu option
Detection limit
100% to 100 ppb, subject to spectral interference
Standard inlet
ECL-Static and ECL-Insight DEMS cells
Response time
Less than 100 ms
Sampling pressure
Atmospheric pressure with the optional QIC heated capillary inlet
Format
Benchtop or mobile cart mounted
Control software
MASsoft Professional and QGAsoft, Windows compatible
Speed
Up to 650 measurements per second
Detector
Dual Faraday/Channeltron electron multiplier
Interface
Ethernet, USB and serial (RS-232) connections
Extended mass range option part number
305021 (300 amu mass range in place of the standard 200 amu)

Downloads.

Hiden's published documents for this instrument.

HPR-40 DEMS brochure pdf Gas analysis product catalog pdf Electrochemistry applications pdf Summary of DEMS and OEMS options pdf

Related instruments.

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  • HPR-40 MIMS

    A compact benchtop membrane inlet mass spectrometer system for quantitative analysis and monitoring of dissolved and evolved gases.

  • HPR-20 OEMS

    A system for continuous analysis of evolved gases and vapors in electrochemistry as a function of the applied potential on the real-time scale.

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