C&H 288 Tracer is a highly concentrated vivid tracer dye used for detecting fuel leaks in diesel engines.

C&H 299 Tracer is a concentrated, vivid tracing dye used for detecting water leaks in water-cooled engines for the auto, bus, truck, RV, and marine industries.

C&H 985W is a concentrated ready to use liquid designed to be used for air leak detection during winter temperatures. Safe for virtually all surfaces that are not harmed by water.