Although often barely noticeable and harmless if spotted and treated promptly, leaks will only grow into a bigger problem if left undetected. The consequences of a leak can be enormous and costly, ranging from reduced efficiency, higher operational costs and adverse impacts on the natural environment. Most seriously however, human health and safety can be compromised if dangerous substances - such as some gases - are allowed to leak.

 As such, having strategies and tools in place to quickly and accurately detect leaks is imperative. Today it is possible to utilise Testo‘s quality instruments to carry out gas leak detection quickly and reliably, identifying the source of the leak. 
Did you know: According to the Centres for Disease Control and Prevention (CDC), red blood cells are able to pick up carbon monoxide more quickly than oxygen. As a result, excessive inhalation of carbon monoxide can result in the gas blocking oxygen from getting into the body.

32 products or recommendations for Gas
  • testo 330-2 LL

    Order-Nr. 0632 3307 70

    testo 330-2 LL flue gas analyzer with long-life gas sensors and built-in draught and gas zeroing; BLUETOOTH and with H2--compensated CO-sensor; incl. rech. battery and calibration protocol; with graphic display; version 2010

  • testo 316-2 - Multi Gas Leak Detector 

    Order-Nr. 0632 3162

    Speedy and sure gas leak detection. The Testo 316-2 provides you with a quick and reliable means of detecting methane, propane and hydrogen in the ambient air. The gas concentration is displayed in the form of an easy-to-read bar and an alarm is triggered when a threshold is crossed. 

    • Quick reaction time with built-in pump 

    • Flexible gooseneck sensor for checking hard-to-reach pipes and places. 

    • 18-step bar for displaying gas concentration & maximum leakage display 

    • Measures: Methane, Propane & Hydrogen 

  • testo 317-1 - Flue Gas Spillage Detector 

    Order-Nr. 0632 3170

    Gas leaks on heating systems can quickly become a problem, because breathing in poisonous gases leads to health risks or even a risk of death. With the testo 317-1 Flue Gas Spillage Detector, you have a handy measuring instrument which detects escaping heating flue gases quickly and reliably. 

    • Reliable detection of escaping flue gases

    • Flexible probe for inaccessible areas

    • Acoustic and visual alarm

  • testo 316-1 - Methane Gas Detector 

    Order-Nr. 0632 0316

    Quick and reliable  detection of gas leaks in natural gas pipes. The Testo 316-1 natural gas leak detector with two-stage visual alarm system is ideal for carrying out  gas checks. 

    • Flexible measurement probe for inaccessible pipes 

    • Audible & Visual alarm if limit value is exceeded 

    • Quick responsive sensor 

    • Easy to use 

  • High-pressure set testo 312-4

    Order-Nr. 0563 1328

    testo 312-4 differential pressure gauge
    testo 312-4 hose set
    balloon pump with release screw
    conical test plug 1/2
    conical test plug 3/4
    testo fast printer
    pressure set for gas pressure measurements on heating systems
    high-pressure plug 3/8 und 3/4
    high-pressue plug 1/2 and 1
    high-pressure probe 1up to 25 bar
    system case

  • testo gas detector - Gas detector

    Order-Nr. 0632 0323

    Testo's robust gas detector is a multi-range instrument for detecting methane, propane and hydrogen gases. It has a display which enables direct reading of the ppm-values.

    • Gas detector for methane, propane and hydrogen gases

    • Flexible probe extension for inaccessible areas

    • Acoustic signals on approaching the lower explosive limit

    • With alarm function: continuous tone and indication on the display on reaching the explosive limit

  • testo 320 set - low cost gas anlayser kit 

    Order-Nr. 0563 3220 75

    The Testo 320 low cost gas anlayser kit, offering comprehensive combustion system analysis, is designed for the job site and for the contractor who expects more. Use the Testo combustion analyzer for basic testing and tuning of all types of boilers, heaters or furnaces and also to set up and commission more complex multi-stage or modulating heating systems, for accurate combustion efficiency analysis. 

    • CO, O2 and CO2 also measures
      ambient CO, draught and pressure 

    • Fast 30-second startup 

    • Field-replaceable, pre-calibrated
      sensors for accurate system analysis 


  • testo 317-2 - Methane & Propane Detector 

    Order-Nr. 0632 3172

    Do you want to test quickly and efficiently whether there is a gas leak on gas pipe connections? Let the reliable testo 317-2 Methane & Propane Detector support you in your task. 

    • Display of gas concentration via bar display

    • Self-test of sensor after switching on

    • Pitch of alarm rises along with gas concentration

    • Battery monitoring with optical display

  • Basic set testo 312-4

    Order-Nr. 0563 1327

    testo 312-4 differential pressure gauge
    testo 312-4 hose set
    balloon pump with release screw
    conical test plug 1/2
    conical test plug 3/4
    testo fast printer
    pressure set for gas pressure measurements in heating systems
    system case

  • testo 315-3 - Ambient CO and CO2 Detector 

    Order-Nr. 0632 3153

    The high-quality testo 315-3 is an easy-to-use, ruggedly designed CO and CO2 meter that enables you to carry out quick and reliable ambient measurements according to DIN EN 50543 standard.

    • Measures CO & CO2 

    • Temperature & Humidity Measurements 

    • Optional Bluetooth Interface 

    • Optical & Audible Alarms 

  • testo 317-3 - Ambient CO Meter 

    Order-Nr. 0632 3173

    Carbon monoxide is a silent killer. The compact Testo 317-3 CO meter is designed to provide you with a quick and reliable means of testing ambient air for carbon monoxide. 

    • Instant Start up: no zeroing phase 

    • 3-year warranty on CO sensor 

    • Alarm with adjustable thresholds 

    • Carry case with belt clip and handstrap 

  • testo 324 - Pressure/gas leak detector

    Order-Nr. 0632 3240

    Professional pressure/leak detector for installation, maintenance and service of gas and water pipes. Specially designed to carry out reliable leak tightness checks, load tests, serviceability tests, temperature measurements in accordance with existing rules and regulations.

    • Easy to set up, easy to use due to legally compliant measuring menus (i.e. according to TRGI 2008)

    • Extremely accurate and DVGW-compliant measuring results

    • Leak tightness checks of gas pipes according to TRGI 2008 and liquid gas pipes according to TRF 2012

    • Easy to use due to automatic pressure build-up; quick and easy data storage

  • Mini ambient air probe for flue gas analyzers

    Order-Nr. 0600 3692

    Use the mini ambient air probe for direct measurement of ambient air temperature on the flue gas analyzer.

    • Can be plugged directly into the flue gas analyzer 

    • Shock-resistant thanks to plastic basket

    • Measuring range: 0 to +80 °C

  • Ambient CO probe

    Order-Nr. 0632 3331

    The ambient CO probe (in conjunction with the appropriate measuring instrument) helps you to detect carbon monoxide in indoor room air.

    • Warns of hazardous CO concentrations in the indoor air (e.g. in boiler rooms)

    • Measuring range: 0 to +500 ppm

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