miniRUEDI

The «miniRUEDI» is a portable mass spectrometer for quantification of He, Ne, Ar, Kr, N₂, O₂, CO₂, CH₄, H₂ and other gas species in gases and water.

The miniRUEDI is designed for environmental research and allows maintenance-free on-site gas analysis during field work at remote locations. The miniRUEDI was (and is) developed at the Swiss Federal Institute for Aquatic Science and Technology (Eawag).

The unique coupling of a membrane inlet to the mass spectrometer allows simple but accurate quantification of dissolved gas concentrations in water.

All instruments are custom-built and may be adapted to suit specific customer requirements.

Highlights

• Accurate quantification of He, Ne, Ar, Kr, N₂, O₂, CO₂, CH₄, H₂, etc. in gases or in water.
• Unique membrane gas inlet for accurate, unbiased quantification of dissolved gases in water (patent application pending).
• Simple and reliable calibration using ambient air or custom gas standards — also for water analysis! No need for calibration of water analyses using external water standards with known gas concentrations, which are challenging to manufacture and handle.
• Designed and built for maintenance-free on-site gas analysis at remote locations: simple and automated calibration, low power consumption, rugged construction, maintenance free, options for remote control.
• Gas inlet at atmospheric pressure with six inlet ports for different gas samples (number of inlets can be increased on request).
• Size and weight (incl. carrying case): 80 cm × 52 cm × 32 cm / 32 kg (can be transported as normal passenger luggage with most airlines).
• Power supply: 24 V(DC), runs off 110–230 V(AC) mains converter (included), batteries, solar panels, etc. Power consumption: 50 W (normal operation).
• Open-source software toolbox for instrument control and data processing allows flexible implementation of custom analysis procedures and data processing (Python, GNU Octave).

Further information:

• Don’t hesitate to ask us for a quote or further details: Contact
• Datasheet (PDF)
• Application examples and clients
• Full details on miniRUEDI working principles, analytical performance, illustrated application examples: Brennwald et al. (2016), A Portable and Autonomous Mass Spectrometric System for On-Site Environmental Gas Analysis, Environmental Science & Technology, doi: 10.1021/acs.est.6b03669.
  
• Compensation of mass-spectromtric overlap interferences: Brennwald et al (2020), Deconvolution and compensation of mass spectrometric overlap interferences with the miniRUEDI portable mass spectrometer, MethodsX, doi: 10.1016/j.mex.2020.101038

Accessories

• GE-MIMS membrane modules for dissolved gas analysis in water
• Total gas pressure sensors (e.g., for GE-MIMS analysis), compatible with ruediPy software
• Temperature sensors (e.g., for GE-MIMS analysis), compatible with ruediPy software