Drum and barrel pumps are usually electrical and mechanical devices, or both, which are used to remove or siphon out the contents of a drum or barrel. To do this, drum and barrel pumps are fixed to the opening of the drum or barrel to be filled or emptied. Most drum and barrel pumps are designed to provide safe and easy transfer of a wide range of liquids and difficult to handle fluids, such as solvents, bases and acids. Containers are quickly emptied or filled using drum and barrel pumps and virtually eliminate splashes and spills. There are many different drum and barrel pump models, with different pump tube lengths, available to meet a wide range of requirements. Different liquids especially chemicals require different types of drum and barrel pumps. Some of the chemicals drum and barrel pumps can handle are boric acid, calcium chloride, acetone, mercuric cyanide and sodium chloride, to name just a few.