Water quality - Determination of biochemical oxygen demand after n days (BOD<(Index)n>) - Part 2: Method for undiluted samples (ISO 5815:1989, modified); German version EN 1899-2:1998— 16 стр.
German standard methods for the examination of water, waste water and sludge; parameters characterizing effects and substances (group H); determination of oxygen depletion in after n days (H 52)— 8 стр.
Small wastewater treatment systems for up to 50 PT - Part 3: Packaged and/or site assembled domestic wastewater treatment plants; German version EN 12566-3:2005— 48 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 oxygen depletion in after n days (H 52)— 8 стр.