Compact flue gas probe with 300 mm long probe shaft including particle filter and thermocouple. Bayonet lock ensures quick, easy connection to the measuring instrument.

Compact basic flue gas probe with 180 mm long probe shaft, integrated thermocouple and dirt filter.

Modular flue gas probe, probe length 300 mm, diameter 6 mm, with cone. The testoFix probe holder is available for this probe as an optional accessory. Use this to attach the flue gas probe to the flue gas pipe quickly and securely. The probe hose is shorter (650 mm) and more flexible than before, to make your work easier.

Modular flue gas probe with a probe length of 300 mm and a diameter of 8 mm, with a cone for attaching it in the measurement aperture. However, the flue gas probe can also be securely and reliably attached to the flue gas pipe using the optional testoFix probe holder. The hose between probe and measuring instrument is shorter and more flexible than before, which makes set-up and dismantling significantly easier.

Modular flue gas probe, probe length 180 mm, diameter 6 mm, with a cone for attaching it in the measurement aperture. However, you can also attach this flue gas probe to the flue gas pipe securely and reliably using the testoFix probe holder. New: short, flexible hose for easier handling. &nbsp;

Modular flue gas probe with a probe length of 180 mm and a diameter of 8 mm, including cone and short, flexible hose for straightforward set-up and dismantling. This flue gas probe can also be attached to the flue gas pipe using the optional testoFix probe holder.

Modular flue gas probe with 300 mm long probe shaft, including dirt filter and thermocouple. The quick-change click system enables quick, flexible replacement of the probe shaft.

T&Uuml;V-tested modular flue gas probe with 300 mm long probe shaft including dirt filter and thermocouple. The quick-change click system enables quick, flexible replacement of the probe shaft.

Modular flue gas probe with 180 mm long probe shaft, including dirt filter and thermocouple. The quick-change click system enables quick, flexible replacement of the probe shaft.

With this kit, you will be equipped for the most important measurements involving domestic heating systems: the testo 300 flue gas analyzer is supplied with O2 and CO sensor up to 4,000 ppm, basic flue gas probe, pressure test accesory kit, 2 x pipe temperature clamp probes,testo Bluetooth&reg; Connector, instrument carry case, AC USB power supply.

With this kit, you will be equipped for the most important measurements involving domestic heating systems: the testo 300 flue gas analyzer is supplied with O2 and CO sensor up to 4,000 ppm, basic flue gas probe, testo Bluetooth&reg; Connector, 1x testo 510i bluetooth differential manometer, 2 x testo 115i bluetooth pipe clamp thermometer, instrument carry case, AC USB power supply.

With this kit, you will be equipped for the most important measurements involving domestic heating systems: the testo 300 flue gas analyzer is supplied with O2 and CO sensor up to 4,000 ppm, basic flue gas probe, testo Bluetooth&reg; Connector, 1x testo 510i bluetooth differential manometer, 2 x testo 115i bluetooth pipe clamp thermometer, 1 x testo gas leak detector, instrument carry case, AC USB power supply.

The testo 300+ Flue Gas Analyser Advanced Kit is a professional combustion analysis package for engineers who need accurate boiler testing, diagnostics and emissions measurement. It supports efficient on-site workflows with dependable flue gas readings and practical accessories for more demanding service tasks. It is suited to advanced boiler servicing, commissioning, emissions checks, combustion performance diagnostics and CO safety testing.

The testo 300+ Flue Gas Analyser Smart Kit is a connected professional combustion testing package for modern heating engineers. It combines accurate flue gas measurement with smart digital workflows to simplify boiler servicing, diagnostics and reporting. It is ideal for boiler servicing and commissioning, digital reporting, combustion efficiency checks, CO safety testing and emissions documentation.

The testo 300+ Flue Gas Analyser Ultra Smart Kit is a premium connected combustion testing package for engineers who need advanced diagnostics and efficient digital reporting. It supports accurate flue gas analysis, streamlined workflows and reliable documentation for demanding heating applications. It is suited to advanced boiler servicing, emissions and compliance checks, smart diagnostics, CO safety testing and digital reporting.

The testo 327 Standard Kit + Gas Leak Detector + CPA1 Kit is a complete flue gas analysis and gas safety testing package for engineers carrying out boiler, appliance and CO safety checks. It supports combustion measurement, leak detection and CPA1-related testing in one practical kit. It is suited to boiler servicing and commissioning, gas leak detection, CPA1 testing and CO safety checks.

The testo 327 Advanced Kit + Gas Leak Detector is a professional combustion and gas safety package for heating engineers working on domestic and light commercial systems. It combines accurate flue gas analysis with gas leak detection to improve service efficiency and safety checks. It is suited to boiler servicing and commissioning, gas leak detection, combustion checks, CO safety testing and performance diagnostics.

The testo 327 Advanced Kit + Gas Leak Detector + CPA1 Kit is a complete professional testing package for combustion analysis, gas leak detection and CO safety checks. Designed for heating engineers, it supports accurate boiler diagnostics, appliance testing and compliance-focused reporting. It is ideal for advanced boiler servicing, gas leak detection, CPA1 testing, CO safety checks and combustion performance assessment.

The testo 327 Standard Kit + Gas Leak Detector is a professional combustion analysis and gas safety package for heating engineers working on boilers and gas appliances. It combines flue gas measurement with gas leak detection to support safer installation, maintenance and fault-finding. It is ideal for boiler servicing, combustion and CO checks, and gas leak detection during service or repair work.

Keep your flue gas analyser operating at peak performance with the Flue Gas Cone. This essential replacement part ensures a proper seal around the probe tip for accurate readings and helps protect your probe from damage.

Cone (6mm) - for Flue Gas Probe

Cone (6mm) - for Flue Gas Probe