The Vacutec EVAPro 2000E EVAP-approved smoke machine features STAR EnviroTech, Inc. technology designed for and capable of being used with nitrogen, allowing the user to connect right to tire inflation nitrogen generator. Patented UltraTraceUV solution deposits a fluorescent dye at the exact location of the leaks. A two-minute "pass/fail" feature verifies 0.040" or 0.020" leaks in OBD-II vehicles. This kit comes with all necessary accessories, and provides up to 500 tests per refill.