DIN 38412-3 PDF

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)
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 10/01/2010