Quantitative Gas Analyser - MAX300-LG

The MAX300-LG is a fully automated Quantitative Gas Analyser for complex gas mixture analysis over the full dynamic range 100% to <10ppb with the highest possible precision and with cycle times of <300msec per component.

Quantitative Gas Analysis, performed with precision, accuracy and repeatability, demands an analyser with exceptional stability & repeatability characteristics coupled with an inlet system and analysis methods that can handle routine calibrations and background gas subtractions. The MAX300-LG Quantitative Gas Analyser provides all this in a compact and fully automated benchtop laboratory instrument.

MAX300-LG Quantitative Gas Analyser

As standard it is configured with our highest specification 19mm quadrupole rod set, dual Faraday cup/Electron Multiplier detectors, temperature stabilised ion source, and 4 channel chemically inert auto-controlled inlet valve (expandable to 16 streams). Not only does this combination offer best in class stability and repeatability characteristics, it is backed by our industry leading Questor5 quantitative analysis control platform which features fully automated analysis routines that measure and deconvolute background gas interferences and overlapping fragment peaks. This is combined with automatic calibration stream analysis and a 180 component internal fragment pattern library to deliver single click quantitative analysis of unlimited components with a cyle time of 300msec per component.

All this is backed by our no-nonsense application review service which provides you with a written statement of expected precision and repeatability of analysis for each component in you gas mixture - taking the guesswork out of quantitative gas analysis.


MAX300-LG Quantitative Gas Analyser Features:

  • +/-25ppm absolute precision measured on 1% argon
  • <10ppb detection capability, extendable to ppt with membrane inlet option
  • 250degC heated inlet
  • 8 decade dynamic measurement range
  • 19mm high transmission and resolution quadrupole mass filters
  • 250/300amu mass range
  • 4 stream chemically inert auto-sampling inlet (expandable to 16 streams)
  • Unlimited component analysis
  • 180 species internal component cracking pattern library
  • 21 CFR 11 compliant
  • ONE CLICK QUANTITATIVE ANALYSIS METHODS


Quantitative Gas Analysis Software - Questor5:

Questor 5 Quantitative Gas Analysis software is a fully automated package that provides single click quantification of complex gas mixtures. Unique analysis methods can be applied to individual streams, automatically calibrating relative sensitivity factors, subtracting background gas interferences and applying full matrix inversion techniques to deliver accurate and precise component concentrations in under 300msec per component cycle.

Mass Spectral Library


Internal Cracking Pattern Library


  • >180 components


  • Fully integrated with NIST


  • Fully editable


Analysis Fragment Matrix

Events Log


Concentration of Air Components

Automated Analysis Matrix:

Add components to the analysis fragment matrix and Questor5 automatically selects the appropriate analysis peak for the highest possible accuracy.






Events Log:

Every valve switch and stream alarm is automatically logged for immediate review.Questor5 is fully 21 CFR 11 compliant as standard.








Quantitative Results:

Automated analyses report concentrations in real time. The example shows an analysis switching between nitrogen and air. The Xenon concentration is around 8ppb and the cycle time over the full 8 decade dynamic range is <300msec











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