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Colorimetric gas detector tubes

Gas detector tubes are devices particularly adapted for one-off gas measurements or when there is no available classic device to detect or monitor some substances. They are easy-to-use, accurate, cost effective and require no special technical knowledge…

dosimetric and colorimetric gas detection, gas detector tubes & air sampling pumps

  • colorimetric gas detector tubes

    Colorimetric gas detection tubes are one-off gas measurement units. They can quickly (within a few seconds) and accurately measure concentrations of a gas. This measurement system is composed by a manual air sampling pump and reactive tubes specific to the targeted gas. This combination is inseparable.

    This solution is particularly well suited for measuring the presence of toxic or asphyxiating gas. Colorimetric tubes enable detection of numerous common, rare or exotic gases (almost 500 gases and vapors). For some gases there are also different measuring ranges to meet the needs of everyone.

  • dosimetric detector tubes

    Also known as dosi-tubes, dosimeter tubes measure a quantity of gas on a defined period (8 hours usually) to monitor time weighted average measures (TWA) of present gases and substances. Dosimeter tubes are widely used to monitor concentrations of formaldehyde, benzene and carbon dioxide in buildings open to the public.

    Time-weighted detector tubes are small and lightweight and feature a clip to wear it close to the breathing tracts in order to get accurate measures of inhaled concentrations. Thus they are very discrete and inform users of the global quantity of inhaled gas during the day.

  • automatic air sampling pumps

    The automatic air sampling pump GSP series was especially designed to get a continuous monitoring of exposure limit values and time-weighted average values in ambient air. These automatic air sampling pumps can be used to monitor formaldehyde, benzene, toluene, xylene… An LCD display allows users to setup internal flow, global sampling volume and sampling time.

  • pyrolyzers to detect freons

    The Pyrotec 840 pyrolyzer for colorimetric gas detector tubes is an additional device. It is used when gas measurement requires a pyrolytic sampling preparation to perform the detection. It can be directly adjusted to a GV-100S air-sampling pump to get a pyrolyzer system for fluorochlorocarbon (freon) gases, halogenated hydrocarbons (acetonitrile, methyl chloride, methyl sulfide…) and anesthetic gases.

  • airtec tubes to monitor compressed air

    Airtec tubes enable easy and fast monitoring of compressed air cylinders quality for self-contained breathing apparatus, airline supplied air systems and diving bottles. This monitoring and control unit for breathing air offers better safety.

Video introducing gas detector tubes

Our gas detector tubes and accessories

Colorimetric tubes

The colorimetric gas detection tube system is a simple and accurate solution composed by a manual sampling pump and a specific gas detection tube. They are designed for use together.

  • Gas detector tubes Colorimetric tube
  • Accurate: the sampling pump features a mechanical accuracy piston which creates a vacuum then enables direct reading on the colored tube (colorimetric tube)
  • Swift: one or two pump strokes are enough to draw sample and the value can be directly read on the tube
  • User-friendly: no knowledge, no specific process and no technical competence are required

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Dosimeter tubes

TWA measuring system (time-weighted average) – also known as dosimeter tube or passive tubes gas detection – measures the time-weighted average concentrations of a gas in ambient air.

  • Gas detector tubes Dosimetric tubes
  • The dosimeter tube is inserted in its holder and wore close to the breathing zone (e.g. a shirt collar) to get an accurate measure of inhaled concentrations. This allows the monitoring of hazardous exposure during a working day.
  • Thanks to this system, wokers can easily get daily exposure concentrations and evaluate working areas. These simple and direct measures require no specific analyzis instruments or complex operation procedures.

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Sampling pump – GSP-300

The GSP-300 gas sampling pump is a very accurate aspirated pump designed for TWA and STEL measurements with colorimetric gas detection tubes

  • sampling pump GSP300
  • Large LCD screen for pump display and setup
  • Adjustable 50/520 mL/min flow according to inserted tube
  • Flow automatic correction
  • 10 hours runtime with two AA batteries
  • Dimensions: 80 x 40 x 10 – weight: 300 grams
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Colorimetric gas detection tube pyrolyzer – PYROTEC 840

Combined with the Gastec pump, the Pyrtec 840 pyrolyzer thermally converts freons (fluorochlorocarbons), halogenated hydrocarbons and some anaesthetic gases in order to accurately measure them.

List of freons: R11, R12, R22, R112, R113, R114, R123, R124, R141B, R22

  • Pyrolizer for colorimetric gas detection
  • In-situ user-friendly, cost-effective, quick and accurate measurement
  • 2 minutes warm-up time
  • Filament lifetime: around 1,000 measures at 20 ppm
  • Dimensions: 150 x 68 mm – weight: 245 grams
  • Relative runtime autonomy: 2 hours continuously
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Airtec tubes enable easy and fast quality monitoring of compressed air cylinders for self-contained breathing apparatus, airline systems and diving bottles to comply with the EN12021 standard

  • gas detector tubes for compressed air quality analysis
    • Monitored gases: CO, CO2, H2O, NO, NO2, oil vapors
    • User-friendly and accurate monitoring of breathable air quality
    • Convenient and lightweight carrying case for on-site monitoring
    • Pressure reducer connection to avoid loss
    • Two available kits: STD-300 standard kit and AIR-QUAL kit
  • Additional information
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