50.99 Oct 20, 2025
ISS
European Norm
English
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This document specifies methods for the calculation of the dry matter fraction of sludge, sludge products, treated biowaste, soil and waste for which the results of performed analysis are calculated to the dry matter basis. Depending on the nature and origin of the sample, the calculation is based on a determination of the dry residue (method A) or a determination of the water content (methods A and B). It applies to samples containing more than 1 % (mass fraction) of dry residue or more than 1 % (mass fraction) of water.
Method A applies to sludge, sludge products, treated biowaste, soil and solid waste. Method B applies to liquid waste and to samples which are suspected or known to contain volatiles except for water.
                PUBLISHED
                                    SRPS ISO 11465:2002
                            
                    PROJECT
                    dnaSRPS EN ISO 11465:2025
                    50.99
                                        FDIS or proof approved for publication
                    Oct 20, 2025