1 gal (4 L) pail of multi-colored fluid dye. Leak Detection Dye, Series UV Flourescent, Container Type Pail, Container Size 1 gal, Color White, Product Type Leak Detection Dye, Boiling Point 392 Degrees F, Flash Point 200 Degrees F, Fluorescent Fluorescent, Product Form Liquid, Specific Gravity 0.96, Viscosity @ 40 Deg C 20.5 cSt.