German standard methods for the examination of water, waste water and sludge; general measures of effects and substances (group H), determination of the settleable matter by volume in water and waste water (H9)— 7 стр.
German standard methods for the examination of water, waste water and sludge - General information (group A) - Part 30: Pretreatment, homogenization and aliquotation of non-homogeneous water samples (A 30)— 16 стр.
German standard methods for the examination of water, waste water and sludge; sludge and sediments (group S); determination of water content, of dry residue and of solids content (S 2)— 7 стр.
German standard methods for the examination of water, waste water and sludge; parameters characterizing effects and substances (group H); determination of filterable matter and the residue on ignition (H 2)— 12 стр.
