German standard methods for the examination of water, waste water and sludge; bio-assays (group L); determining the tolerance of fish to the toxicity of waste water by way of a dilution series (L 31)

German standard methods for the examination of water, waste water and sludge; bio-assays (group L); determining the tolerance of Daphnia to the toxicity of waste water by way of a dilution series (L 30)

German standard methods for the examination of water, waste water and sludge - Bio-assays (group L) - Part 48: Arthrobacter globiformis toxicity test for polluted solid material (L 48)

German standard methods for the examination of water, waste water and sludge; bio-assays (group L); determining the tolerance of green algae to the toxicity of waste water (Scenedesmus chlorophyll fluorescence test) by way of dilution series (L 33)

German standard methods for the examination of water, waste water and sludge; test methods using water organisms (group L); determination of chlorophyll a in surface water (L 16)

German standard methods for the examination of water, waste water and sludge; sludge and sediments (group S); determination of oxygen consumption rate (S 6)

German standard methods for the examination of water, waste water and sludge; anions (group D); determination of readily liberatet sulfide (D 27)

German standard methods for the examination of water, waste water and sludge; sludge and sediments (group S); determination of the chemical oxygen demand (COD) (S 9)

German Standard Methods for Examination of Water, Waste Water and Sludge Cations (Group E) Determination of Mercury (E 12)

German standard methods for the examination of water, waste water and sludge; test methods using water organisms (group L); determination of oxygen production and oxygen consumption in an aquatic environment (SPG and SVG) by means of the light and dark bottle method (L 13) (determination of biogenic aeration rate)