1.1 ,This practice covers procedures for detecting the sources of gas leaking at the rate of 1 ,×, ,10 ^–,5 Pa m³/s (1 ,×, ,10^–,4 standard cm³/s) or greater. The tests may be conducted on any object that can be pressurized with a tracer gas that is detectable by a thermal conductivity detector. The test sensitivity will vary widely depending on the tracer gas used.