Thermo Scientific™

Model 42i-D NOx Analyzer

 Related applications:
Measure the amount of nitrogen oxides in the air from sub-ppm levels up to 100ppm using chemiluminescence with the Thermo Scientific™ Model 42i-D NOx Analyzer. The Model 42i-D is a single chamber, single photomultiplier tube design that measures NOx only.

Discover the iQ to work smarter with our next generation 42iQD NOx Analyzer.

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Key Features:

  • Standard dual range and auto ranges
  • 10-second response time
  • Temperature and pressure correction
  • User-selectable alarm levels for concentration

iSeries Advantage:

  • Ethernet connectivity for efficient remote access
  • Enhanced user interface with one button programming and large display screen
  • Flash memory for increased data storage and user downloadable software
  • Enhanced electronics design for optimized product commonality
  • Improved layout for easier accessibility to components
User services

Order status 
Review your order status.
Service offerings
Overview of all services including support plan options, repairs and calibrations, spare parts and technical training.
Factory Depot 
Request an RMA number and send your instrument to our factory for repair.
Spare Parts
Purchase the most commonly ordered spare parts 24/7 via credit card.
(United States customers only)


Manuals & protocols