Fluorescent Leak Detectors

A fluorescent leak detection additive can be added to the air conditioning system refrigerant. With the engine running and the A/C system engaged, the technician can scan A/C system components and pipes/hoses with an ultraviolet lamp for refrigerant leaks.

Any leak, even the smallest pin hole, will be easy to spot as it will show up as a bright yellowish-green spot under the ultraviolet light.