Fits your life like a glove: The flue gas analyzer testo 300
Your advantages with the testo 300:
Made for your digital life
- Intuitive touch operation
- Perfect read-out at all times
- Self-explanatory measurement menus
- WLAN and Bluetooth
Faster finish
- Immediately ready to go from stand-by mode
- Documentation without paperwork
- Customer’s electronic signature
- Customer data in instrument
testo 300
All values at a glance - just click!


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Especially robust: Stands up to all the challenges of your workday

Smart measuring technology is of little benefit if it does not keep going in tough day-to-day working conditions. Because your measuring instrument is a partner that supports you every day in the efficient, problem-free performance of your tasks.
That is why the testo 300 is particularly resilient and can easily meet the special challenges across workshops, transport vehicles and boiler rooms.
testo 300 LL
Longlife NOx kit with printer
- testo 300 flue gas analyser with longlife O2, CO (H2 compensated), and NO sensors for commercial boiler servicing
- CO measurement up to 30,000ppm via automatic dilution system
- NO measurement up to 3,000ppm (gives calculated total NOx value)
- for gas, oil, and solid fuelled combustion systems
- Printer, including spare paper
testo 300 LL
Longlife standard kit
- testo 300 flue gas analyser with Longlife O2 and CO H2 sensor
- Automatic dilution up to 30,000 ppm
- NO sensor can be retrofitted
testo 300 LL
Longlife standard kit with printer
- testo 300 flue gas analyser with Longlife O2 and CO H2 sensor
- Automatic dilution up to 30,000 ppm
- NO sensor can be retrofitted
- Printer, including spare paper

Immediate view of all readings
In individually configurable display.


Graphical representation of the readings
Measurement values in unambiguous trend curve


Core flow search
With graphic support


Self-explanatory measurement menus
For all applications involving heating systems


Differential pressure: Measurement menu
Indispensable on gas boilers


Differential pressure: Graphical representation
Optimum for longer measurements.


Professional documentation
Create reports, add comments and send on site.


Signature function
Customers can sign off reports directly in the instrument.

