MASTERCOOL 55500-UV Heated Diode Electronic Leak Detector with UV Light, Blue/Gray UV Dye Injector With 25 Application Dye Cartridge Dye injection Connection Hose W/R12 Adapter Detects all refrigerants (CFC's, HCFC's, HFC's) Meets SAE J1627 and CE Conformity Heated Diode