9 Equipment for detection of leaks and for tracing gas, namely, detectors, electronic controllers, probes, battery operated duct fans, leak detection workstations comprising, console, pneumatics, test connections, pneumatic output, worktop, drawers, cabinets and parts therefore, leak detection units comprising built-in detectors and controllers and parts therefore; computer programs for use with measuring devices and testing equipment for detecting the presence of leaks or for the purpose of measuring and testing concentrations of gas