The OPK-50GS/E kit was designed by Spectronics to make it easier for technicians to find all air-conditioning leaks — even those in cramped areas that are inaccessible to larger lamps. The kit features the Optimax Jr., a compact, blue LED flashlight that reveals small leaks in air-conditioning systems. The device is just over 7 inches long, weighs only 5 ounces and can fit in a shirt pocket. It has a 100,000-hour LED life and is powered by three AA batteries, which are included. Also included in the kit are four Glo-Stick universal AC dye capsules. These single-dose capsules come in different sizes and concentrations to match the system capacity. Two BV-50 bleed valves attach the capsules to the service hoses. An 8-ounce spray bottle of Glo-Away dye cleaner and fluorescence-enhancing glasses round out the kit. All items are stored in a plastic carrying case.

Spectroline Corp., 956 Brush Hollow Road, Westbury, NY 11590; (800) 274-8888; www.spectroline.com.