Uview Products 499005 499005 UView Universal A/C Dye Cartridge 4oz For Spotgun™ System.

Disposable cartridges that are easy to load without fumbling or messy spills. Continuous trouble-free leak detection with just one cartridge. Fits competitor’s gun - and pump type dye injectors! 4 oz. (120 ml) cartridge services 32 small A/Csystems or 16 regular A/C systems.