Tritt and Schuchardt (1992) present the most recent and comprehensive summary of the physicochemical characteristics of many different waste from german Slaughterhouse, but care is needed in using these figures. German sluaghterhouses have no rendering plant, since this processing must, by law, be performed in a separate off-site facility (Tritt and Schuchardt, 1992) . the data of stebor. (1990) are derived from a very large, integrated US beef slaughterhouse and show excellent similarities with Australian data. For sheep-processing plants, the presence of a fell monger may increase wastewater concentrations of nitrogen, sulphide, COD and fat considerably (table 2)