Emissions Analyzers for EPA Compliance testing & Combustion Tuning – CO, NOx, CO2, O2, SO2, H2S, and more

Emission testing and combustion analysis are vitally important for environmental EPA compliance.  Combustion tuning is necessary to keep combustion process running efficiently and safely.

Testos extensive line of Emissions and Combustion analyzers provide the level accuracy you expect, the easy-of-use you need, and the rugged construction required for industrial emission testing.

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Testo Analyzers offer you:

  • Highest accuracy: O2, CO, NOx (NO, NO2), SO2, CO2, H2S, HC
  • Extensive selection of probes and sample hoses
  • Highly flexible software and data management packages
  • The most valued analyzers on the planet!

Overview of portable analyzers for combustion measurements in commercial and industrial applications

Hand-held for combustion tuning, troubleshooting, and emissions pre-testing

  • testo 340
    • testo 340
  • This compact 4-gas analyzer is perfect for combustion tuning or compliance pre-testing. Simple, rugged, and highly versatile.
  • 4 sensors
  • O2 (Standard sensor)
  • Optional Sensors:
    CO, COlow, NO, NOlow, NO2, SO2
  • CO2 determination
    (calculation from O2, standard)
  • Standard:
    Dilution of all sensors factor 5
  • Optional:
    Dilution of all sensors factor 2

Multi-gas analyzer - EPA compliance testing, combustion monitoring and more

  • testo 350
    • testo 350
  • Highly flexible 6-Gas analyzer. Custom configured for EPA testing, or for industrial combustion monitoring, or even semi-continuous NOx monitoring.
  • 6 sensors
  • O2 (Standard sensor)
  • Optional sensors:
    CO, COlow, NO, NOlow, NO2, SO2, H2S, CxHy
  • CO2 measurment
    (Optional when fitted with CO2 infrared sensor)
  • Standard:
    Dilution of all sensors factor 5
  • Optional:
    Dilution of all sensors, selectable factor 2, 5, 10, 20, 40

Approved for Maritime (MARPOL Annex IV) testing and monitoring

  • testo 350 Maritime
    • testo 350 Maritime
  • Specifically designed for Diesel Marine engines. The only approved portable for MARPOL Annex VI and NOx Technical Code.
  • 6 sensors
  • O2
  • Standard:
    CO, NO, NO2, SO2
  • Standard:
    CO2 infrared sensor
  • Standard: Dilution of SO2 factor selectable: 2, 5, 10, 20, 40
  • Standard: Dilution of all sensors factor 5

Overview of all areas of application



testo 330i: Smart exhaust gas analysis by App

Testo exhaust gas analyzer

The flue gas analyzer testo 330i is the further development of the proven exhaust gas measuring instrument testo 330-2 LL, and has the same precision and reliability as this Testo evergreen. The most important difference: The testo 330i is operated entirely via the testo 330i App and a smartphone or tablet. This gives you unheard of freedom and flexibility in your work.

  •  Operation of the exhaust gas measuring instrument testo 330i, and display of the measurement values completely via App.
  • Especially robust thanks to allround sealed housing.
  • Documentation of the measurement values completely paper-free in the App – including fast dispatch of reports by e-mail

Combustion Analysis - Smarter and more brilliant than ever!

The New 3-Gas, Testo 300 combustion analyzer measures O2, CO and optional NO (calculated NOx), draft efficiency excess air, with proven sensor technology and now incorporates and transmits data via the new generation of connectivity.  Take it for a test drive so you can experience the:     

  • Brilliance you can touch
  • Bluetooth, WiFi and smart phone communications to Connect to your smart world
  • Long life sensor that last up to 6 years
Testo fine particle measuring instrument

Combustion gas & particle analyzer for biomass fueled applications

The Testo 380 integrates the measurement of the gaseous combustion parameters (ie. O2, CO and CO2) particulate mass (PM), in one simple-to-use package. The system provides all measurements in real-time and includes data logging capability through powerful software. Simultaneously measuring both fine particulate and the combustion parameters set a new standard in combustion instrumentation.

The testo 380 is solely designed to measure the combustion parameters and particulates from biomass fueled combustion sources.  The solid fuels include:

  • Wood pellets/logs/wood chips/wood briquettes (and wood refuse)
  • Straw and grains
  • Coal, coal briquettes, coke, brown coal, lignite and peat

Testo smoke count measuring instrument

Portable diesel smoke spot test meter

The testo 338 is a portable industrial particulate meter with Bluetooth that enables quick and simple measurement of smoke from diesel engines.  It takes just minutes to start the diesel smoke test meter and make a measurement.  The testo 338 measures soot concentration in mg/m3, Bosch Number, and Filter Smoke Number (FSN).