The Refco STARTEK is an electronic leak detector for all halogenated refrigerants, including R410A. The STARTEK’s low power requirements, small size and high sensitivity combine to create a tool which is easy to handle and extremely effective at locating even the most difficult-to-find leaks.Fully SAE J1627 compliant, STARTEK will detect leaks as small as 0.1 oz/yr (3g/year) in R12, R22, R134a and other halogen refrigerant systems.STARTEK should not be used on systems that contain flammable refrigerants such as Propane, Isobutane, etc.