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Why use hydrogen as the tracer gas?

Hydrogen, at 5% in a balance of nitrogen, is:

- Non flammable.

- Non toxic.

- Non corrosive.

- Totally safe.

- Commonly used as a blanket gas in welding so is cheaply and readily available from all the standard gas suppliers.

- Has the smallest and lightest molecules so permeates all surfaces including concrete, tarmac, block paving and grass, rising quickly to the surface.

- Rapidly disperses in air allowing you to hone in quickly to the source.

- Unlike helium leak detection, which has also been used for some types of leak detection tracing, hydrogen is renewable and cheap; helium is finite and expensive.

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