Contec 6.5-gallon Blue Polypropylene Bucket The Contec 6.5-gallon Blue Polypropylene Bucket serves as a replacement for Contec bucket systems. Constructed from a unique polypropylene copolymer, this bucket offers both durability and a lightweight design. The blue color-coding facilitates easy identification for fresh cleaning solutions. It is compatible with all common disinfectant solutions and most common solvents. Click here to browse other Contec cleanroom essentials.