ION Science GasCheck G

Handheld Gas Leak Detector

Ion Science’s GasCheck G is a handheld VOC gas detector which features fast and accurate detection of gas leaks. The GasCheckG can detect almost any known gas or gas mixture and is particularly sensitive to ammonia, argon, butane, helium, hydrogen, and SF6.

Designed for search and location of gas leaks, Ion Science’s GasCheck G features an advanced micro thermal conductivity sensor for fast and efficient detection of almost any gas or gas mixture.

The GasCheck G provides repeatable, stable readings of any detected gas. The presence of a leak is clearly indicated via the instrument’s LCD display, LED indicator, and an audible sounder. GasCheck G automatically zeros to the ambient air around it when turned on and is immediately ready to detect gases. An easy-to-use graphical interface and intuitive keypad allows simple function, selection and adjustment.

GasCheck G is upgradable throughout the range, and comes in three distinct versions—G1, G2, and G3—each with varied capabilities. Features, outlined below, may be added without returning the device to the factory.

Rapid detection of gas leaks
Measure gas leaks (single gas)
Measure gas leaks (up to 20 gases)
Audible sounder
Flashing back-lit display
Peak hold readings
Factory or custom calibration available
Data logging (store up to 10 readings)
Readings displayed in cc/ sec,g/yr,ppm or mg/m3
Selectable battery type

ION Science GasCheck G Features

Leak detection

  • Fast and accurate leak detection with high sensitivity
  • Detects almost all known gas and gas mixtures
  • High sensitivity to ammonia, argon, butane, helium, hydrogen and SF6
  • Reliable, stable, repeatable readings

Ease of use

  • Efficient one-handed operation
  • LCD is backlit, large, and clearly readable
  • Graphical icon menu
  • Conveniently calibrated against helium


  • Readings viewable in cc/sec, g/yr, mg/m3
  • Easily upgraded through available range

Low cost operation

  • Inexpensive parts and consumables
  • 2 year warranty with registration

ION Science GasCheck G

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ION Science GasCheck Accessories

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  • A-21500CalCheck Helium
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