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.
Methods of soil investigations for agricultural engineering - Chemical laboratory tests - Part 10: Testing and evaluation of water for irrigation— 11 стр.
German standard methods for the examination of water, waste water and sludge; parameters characterizing effects and substances (group H); determination of total bound nitrogen TN<(Index)b> (H 27)— 9 стр.
German standard methods for the examination of water, waste water and sludge; parameters characterizing effects and substances (group H); determination of bound nitrogen after reduction with Devarda's alloy and catalytic digestion (H 28)— 10 стр.
German standard methods for the examination of water, waste water and sludge; cations (group E); determination of ammonium-nitrogen by flow analysis (E 23)— 18 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; bio-assays (group L); surfactant biodegradation and elimination test for simulation of municipal waste water treatment plants (L 26)— 16 стр.
