WATER QUALITY. BIOLOGICAL CLASSIFICATION OF RIVERS. PART 1. GUIDANCE ON THE INTERPRETATION OF BIOLOGICAL QUALITY DATA FROM SURVEYS OF BENTHIC MACROINVERTEBRATES— 12 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.
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.
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 - 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.