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The importance of Calibrating and Bump Testing Gas Detectors

Gas Detectors save lives, but they can fail in an unsafe way so the functional tests using non-refillables are very important. Non-refillables are used to both calibrate and functionally test gas detection equipment.

Gas Detection equipment is used for:

  • Confined Space Entry
  • Personal Protection
  • Leak Detection
  • Hot Work
  • Area Monitoring
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Industries that use our Non‐Refillable Canisters

Non-refillable cylinders are used as calibration gases and for bump testing in a host of industries:
Fire service
Food production
Public works
Beverage production
Oil & gas
Water treatment
Iron / steel production
Marine / shipyard
Pulp & paper

Non-refillable cylinders are the best option in all applications where portability is essential and where gas usage is low.

Common Application Examples

MAP packaging

Non-Refillables are used by food process operators to calibrate food atmosphere analysis instruments. This is an important part of quality control and checking the integrity of food packaging.

Refrigerant leak detection

Non-Refillables are used to test refrigerant leak detection equipment to aid compliance with European Union F Gas Regulations.


Non-refillables are often used by teachers and science technicians to support science experiments in schools and universities, as usually the quantity of gas needed is low.

Oxygen depletion alarm testing

Non-refillables are ideal for oxygen depletion alarm testing, being portable and easy to use.

Bump testing

A bump test is another name for a functional check of a gas detector. The process is quick and easy, requiring just a small volume of a test gas.

Low volume general laboratory usage and one-off projects

With volumes from 10 to 110 litres, non-refillables are more convenient and cost-effective for mixtures and pure gases when the usage is either low volume or one-off.


Our range of non-refillable products is comprehensive and covers all major gas detection applications.

Use the below product selector to explore and purchase a limited selection of our calibration gases, and complimentary equipment. The gases listed in our selector are the most popular ones and typically held in stock, these will therefore be available for immediate dispatchment by courier.

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"Our business relies on simple bump testing of gas detectorson board marine vessels. Complex high pressure cylinders and regulators would make the job too difficult but we find the Air Products non-refillable offerings very easy to use and the equipment is simple to operate."

GMS Instruments, Rotterdam

"We are involved in the installation, commissioning and maintenance of a wide range of gas detection equipment into many market sectors. The fact that the Air Products’ range covers all of the flammable, toxic, quad-gas and corrosive gas requirements for this market is very important to us."

Autochim, France

"Personal, portable and fixed gas detection equipment is widely used in many safety critical applications and these items are often subjected to relatively harsh environments and working conditions. The gas sensing element within this equipment is perhaps the most fragile and crucial component, and if this was to fail, it would render the equipment useless. The selection of appropriate test gas is important to ensure the bump test is carried out correctly and as an active member of CoGDEM, Air Products know about it. They have contributed to the CoGDEM Guide to Gas Detection, a new hardback reference book which explains best practice and aids the selection of suitable test gases and equipment."

Leigh Greenham, Director, CoGDEM

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