Robinair has introduced a dual mode tracer gas leak detector (LD9-TG) designed to help A/C technicians locate the source of a system leak and ensure that the leak detector is always at optimal performance. Certified to the SAE J2912 standard, the tracer uses UV wavelength technology along with tracer gas instead of common liquid refrigerant to locate system leaks. The tool can detect an A/C system leak as small as 0.5 ounces per year for R-134a refrigerant and .015 ounces per year for R-1234yf refrigerant.