Refrigerant Halogen Freon Leak Detector A/C R134 R410a R22 Air Gas HVAC Tool with Lndicator Light. Test all refrigerants that contain halogen, Test all halogen gases including //, CFCs R12, R11 R500 R503; HCFCs R22, R123, R124, R502; HFCs R134a R404a R125, also test AZ - 50, MP39.
