WATER QUALITY. BIOLOGICAL CLASSIFICATION OF RIVERS. PART 1. GUIDANCE ON THE INTERPRETATION OF BIOLOGICAL QUALITY DATA FROM SURVEYS OF BENTHIC MACROINVERTEBRATES— 12 стр.
Water quality - Sampling - Part 1: Guidance on the design of sampling programmes and sampling techniques (ISO 5667-1:2006); German version EN ISO 5667-1:2006— 40 стр.
Water quality - Method for assessing the inhibition of nitrification of activated sludge micro-organisms by chemicals and waste water (ISO 9509:1989); German version EN ISO 9509:1995— 12 стр.
Water quality - Test for inhibition of oxygen consumption by activated sludge for carbonaceous and ammonium oxidation (ISO 8192:2007); German version EN ISO 8192:2007— 29 стр.
Water quality - Toxicity test for assessing the inhibition of nitrification of activated sludge microorganisms (ISO 9509:2006); German version EN ISO 9509:2006— 28 стр.
German standard methods for the examination of water, waste water and sludge - Bio-assays (group L) - Part 3: Toxicity test for assessing the inhibition of the dehydrogenase activity of activated sludge microorganisms (TTC-Test) (L 3)— 22 стр.