Thermo Fisher Scientific Prima BT Laboratory Bench-Top Gas Analysis Mass Spectrometer, with a Faraday/Secondary Electron Multiplier Single Microchannel Plate Detector system

Benchtop Mass Spectrometer

By the separation of mixtures within the gas phase, following vaporisation, mass spectrometry provides molecular identification of the principal components of the mixture in a quantitative manner.

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Detailed Description

The Thermo Scientific™ Prima BT Mass Spectrometer is an industrial laboratory gas analyser based on scanning magnetic sector mass spectrometry. Designed for continuous operation in a process environment, the Prima BT mass spectrometer is simple to operate and easy to maintain.


Setup for DEMS (differential electrochemical mass spectrometry) to monitor gas phase products generated during electrochemical processes
Possible to modify flow cell design for alternative purposes (heterogeneous catalysis, dissolved species monitoring, gas separation studies) – Please contact for more information.

Ion Source: Enclosed electron Impact with Dual filaments, temperature controlled
Analyser type: Scanning laminated electromagnet, 6 cm radius, 80 degrees deflection
Mass Range: Adjustable, default is 1-150 amu at 1000 eV ion acceleration voltage
Resolution: Switchable between two collector resolving slits, resolving powers of 60 (1mm) and 20 (4 mm) are standard
Mass scale stability: Measured at mass 28 < 0.013 amu over 24 hours
Peak Shape: At 60 resolution, the ratio of the width of the flat-top to the base peak width 0.5
Abundance sensitivity: <250 ppm for 27/28 amu
Detector: Faraday and optional Faraday/SEM dual detector
Inlet: Temperature controlled micro-capillary with Molecular leak and bypass (standard configuration)
Vacuum system: Turbo-molecular Pump and external Rotary Pump
Sample flow: Digitally measured and recorded for each stream for any instrument with RMS option
Precision: <0.1% relative (typical, application dependent) external rotary pump
Linearity: <1% relative over a decade change in concentration
Dynamic range: 10 ppb – 100% (theoretical, application dependent) external rotary pump only