Testing of mineral oils; determination of the phosphorus content in lubrication oils and additives, digestion procedure and photometric determination— 4 стр.
German standard methods for the examination of water, waste water and sludge; sludge and sediments (group S); determination of loss on ignition and residue on ignition of the dry matter of a sludge (S 3)— 5 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.
German standard methods for the examination of water, waste water and sludge; general measures of effects and substances (group H), determination of the total nonfilterable residue and residue on ignition (H2)— 8 стр.