Hey again,

Here in Southern California we are having an issue getting helium from our distributor (Praxair). They have cut our allotment by almost 70%. Would'nt be a huge issue if we only did pool leaks, but we depend on it for large property irrigation leaks ( a lot of our jobs are Beverly Hills or surrounding areas with HUGE parcels).
Does anyone know of another type of inert trace gas along with a "sniffer"? Thanks guys

P.S. I know about hydrogen, can't use...

Why not a hydrogen tracer gas? If I were busier, I would get this:
http://www.tracerelectronicsllc.com/tracer/tracer/page183/HL5000.html