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TSI’s IAQ-CALC Meters are outstanding instruments for investigating and monitoring indoor air quality (IAQ).  The IAC-Calc can be utilized for spot measurements, sample screening, or the use of data-logging capabilities for short-term to long-term monitoring projects.

  • Carbon Monoxide (CO) range: 0 to 500 ppm
  • Carbon Dioxide (CO2) range: 0 to 5000 ppm
  • Temperature range: 0 to 60 deg C
  • Relative humidity range: 0 to 95% RH


  • Rugged, lightweight, and accurate assessment tool
  • Displays up to 4 measurements simultaneously
  • User-selectable logging intervals and start/stop times
  • Store up to 30,300 data points with 3-parameters
  • Uses standard AA-size alkaline batteries.

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VOC Meter htv-M Formaldemeter

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