German standard methods for the examination of water, waste water and sludge - General informations (group A) - Part 42: Interlaboratory trials for method validation, evaluation (A 42)— 30 стр.
German standard methods for the examination of water, waste water and sludge - Physical and physico-chemical parameters (group C) - Part 10: Calcit saturation of water (C 10)— 34 стр.
German standard methods for the examination of water, waste water and sludge; anions (group D); determination of the dissolved anions bromide, chloride, nitrate, nitrite, phosphate (ortho-) and sulfate anions in waste water by ion chromatography (D 20)— 23 стр.
German standard methods for the examination of water, waste water and sludge; sludge and sediments (group S); determination of phosphorus in sludges and sediments (S 12)— 8 стр.
