​What is the GasCheck G3? The Ultimate Tool for HELIUM Handheld Leak Detection

Posted by Portable Leak Detectors on Apr 17th 2023

GasCheck G3

The GasCheck G3 Portable Leak Detector is a handheld device designed for detecting gas leaks in a wide range of applications.

This unit sold on Portable Leak Detectors, is a highly sensitive instrument, capable of detecting even the smallest of leaks with readouts in ppm or cc/sec. The unit is calibrated to Helium and is most sensitive when detecting Helium gas. Helium is also the recommended gas for use with finding leaks in pressurized systems. The G3 has multiple other gas selections including Ammonia, Argon, Butane, Hydrogen, SF6, and some refrigerants. The device is widely used in industries such as HVAC, refrigeration, automotive, and many others.

In this blog post, we will look closer at the features, benefits, and applications of the GasCheck G3.


The GasCheck G3 is packed with a host of features that make it a highly efficient device for detecting gas leaks. Some of its key features include:

  • High sensitivity: The device is capable of detecting leaks as small as 1 x 10-5 cc/sec, making it one of the most sensitive leak detectors on the market.
  • Rapid response: The GasCheck G3 responds quickly to changes in gas concentration, allowing for quick identification of leaks.
  • Easy to use: The device is designed to be simple and easy to use, with a large, easy-to-read back-lit LCD display and intuitive controls.
  • Long battery life: The device has a long battery life of up to 8 hours, making it ideal for use in remote or hard-to-reach locations.


The GasCheck G3 offers a range of benefits for users, including:

  • Improved safety: By quickly and accurately detecting gas leaks, the device helps to improve safety in a wide range of industries.
  • Cost savings: The device helps to identify leaks early, reducing the risk of damage to equipment and avoiding costly downtime.
  • Easy to maintain: The GasCheck G3 is easy to maintain and does not require regular calibration or servicing, reducing the cost of ownership.
  • Portable: The device is lightweight and portable, making it easy to carry and use in a wide range of applications.


The GasCheck G3 has a wide range of applications including:

  • Quality Assurance Testing on Component Seals
  • Membrane Materials & Glove Boxes
  • Stored Gases & Chemicals
  • Gas Cylinders & Fittings
  • Gas Chromatographs
  • Mass Spectrometers
  • Gas Installations
  • Pipeline Assemblies
  • Anesthetic Gas Bottles
  • Valve Emission Evaluation

Overall, the GasCheck G3 is a highly efficient and effective device for detecting gas leaks. Its high sensitivity, rapid response, and ease of use make it an ideal tool for various industries. With its range of benefits, including improved safety, cost savings, and portability, the GasCheck G3 is a must-have for any business that deals with helium and other gas leaks.

This unit has been discontinued and replaced with the Panther Handheld Leak Detector.