High density polyethylene containers resist acids and caustics. Translucent and marked in liters, quarts and gallons, which allows accurate filling and dispensing. Spring loaded cap provides a tight seal. All have stainless steel fittings except for Cat.No. 18-12745 which has cadmium plated fittings. Available in 1, 2, 2.5, and 5 gallon capacity. White exterior.