PETREL Bay Instruments quadrupole mass spectrometer is designed for versatility in gas analysis using membrane inlet and other gas inlet devices. Our novel design offers one click pump-down of inlets during start-up or change-overs. Filament damage and vacuum losses are prevented using software and hardware that monitors the inlet. A quick-connect fitting that adapts to multiple devices allows easy change-over of inlets, including our high precision membrane, membrane cuvette and capillary gas inlet.

• Mass range: 0 to 100, optionally 200 or 300
• Detectors: Faraday and C-SEM
• Ion source: Gas tight
• Detection limit min: C-SEM (hPa) 1 · 10^-14 hPa
• Scan speed: MID 2 ms – 60 s/amu
• Sensitivity for Ar: C-SEM 200 A/mbar
• Sensitivity for Ar: Faraday 5 · 10^-4 A/mbar

• Automated valve control for pre-evacuating inlets
• Automatic protection of filament and SEM from inlet failure
• Precision* of ion currents: 0.1%
• Precision* of gas ratios: 0.03%
• ¹⁵N,¹⁸O abundance (air): 1 per mil
• * C.V. of triplicate measurements using high precision membrane inlet