Testo 300LL Longlife Flue Gas Analyser O2 CO H2 Compensated NO Ready

  • Longlife O2 and CO sensors - up to 6 year service life
  • H2 compensated CO up to 30000 ppm - accurate high range measurement
  • Smart touch display - fast intuitive operation
  • Probe zeroing in flue - saves time during testing
  • WiFi reporting and PDF storage - instant documentation
  • Bluetooth connectivity - on site printing support
£2,350.80 £1,959.00

Availability: In stock

Product Code
TES300LLSET-PRT

Free Delivery over £99

90-day Returns

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Testo 300LL Longlife Flue Gas Analyser O2 CO H2 Compensated NO Ready

What is the Testo 300LL Longlife Flue Gas Analyser?

The Testo 300LL Longlife flue gas analyser is a high-performance combustion analyser designed for UK HVAC engineers, gas engineers and heating technicians. It delivers fast, accurate measurement of O₂ and H₂-compensated CO up to 30,000 ppm, with the option to retrofit NO measurement, making it ideal for boiler servicing, commissioning and combustion analysis.

Perfect for professionals searching for flue gas analysers, combustion analysers and gas safety testing equipment in the UK, the Testo 300LL combines advanced sensor technology with smart digital reporting to improve efficiency and compliance on site.

 

How does the Testo 300LL improve combustion testing on site?

With Longlife sensors lasting up to 6 years, automatic sensor protection and integrated fresh air dilution, the Testo 300LL ensures reliable measurements even at high CO concentrations. The analyser allows zeroing without removing the probe, saving time during routine testing and improving workflow efficiency.

The smart-touch display and built-in reporting features enable engineers to create, store and send PDF reports instantly via WiFi, helping streamline compliance documentation and customer reporting.

 

Order today to enjoy free delivery, expert support and our 90-day satisfaction guarantee. Need advice? Our team is here to assist you.

 

More Information
ManufacturerTesto
Manufacturer Part Number0564 3004 89
GTIN4029547021770
Included CalibrationCall for info
  • Model: Testo 300LL
  • Product type: Flue gas analyser
  • O2 measurement: Yes
  • CO measurement: H2 compensated up to 30000 ppm
  • NO measurement: Retrofit option
  • Sensor life: Up to 6 years
  • Display: 5 inch HD smart touch
  • Battery life: Up to 10 hours
  • Connectivity: WiFi Bluetooth
  • Standards: EN 50379 Parts 1 to 3
  • Pressure measurement: Integrated fine pressure and 4 Pa measurement
  • Data storage: Internal memory with PDF export
  • Testo 300LL flue gas analyser
  • Flue gas probe
  • Testo Bluetooth printer
  • Rechargeable battery
  • Mains power supply
  • Carry case
  • User documentation
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Why choose Instrotech for your electrical test equipment?

With over 40 years’ experience supporting UK electricians, technicians and engineers, Instrotech is your trusted partner for quality tools and expert service. When you purchase from us, you benefit from:

  • Free UK shipping on orders over £99
  • Access to our knowledgeable technical support team
  • Available calibration services to maintain safety compliance
  • A 90-day money-back guarantee for complete peace of mind

We’re committed to helping you work safely and efficiently with industry-leading products and ongoing support.