Check the listing for details. PLUMBING / FUEL UNDERGROUND SUBSURFACE LEAK FINDER USING ARGON. Condition: New. Listed at 500.00 USD. For sale is one DigiLEAK by DigiFLO inc. Equipped with internal pump, this is a cutting edge ultrasonic leak detection tester, using Argon, for sub / above surface finding of any kind of leak. Argon, gas, heavier than air, tends to leak to the surface and then stay very close to the leak. As a result finding the leak can take less than 15 minutes.User Instructions:Print & read the MANUALPlumber typical response:After getting everything connected, I found my leak in only 10 minutes! The device was able to detect Argon gas from a small leak that I was trying to find, and in the end, it was able to pinpoint its location. This was of sufficient help for me to quickly find and repair the leak. All in all, I am satisfied with the operation of DigiLEAK. During my leak finding work, I was able to even better develop my skills, such that now I'm quickly finding even very small leaks.