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LPP solve problem of acidic effluent storage. Laminated Plastic Products were approached by a company who manufacture castings and pressings in aluminium and other non ferrous metals. One of their processes involves the use of various very corrosive acids. Specifically these include nitric, hydrofluoric, sulphuric and chromic acids at concentrations of up to 30%. After use these acids are run to an effluent pit where they are held prior to their removal by tanker for disposal.