Water quality - Sampling in deep waters for macro-invertebrates - Guidance on the use of colonization, qualitative and quantitative samplers (ISO 9391:1993); German version EN ISO 9391:1995— 17 стр.
Water quality - Guidance standard for the surveying, sampling and laboratory analysis of phytobenthos in shallow running water; German version EN 15708:2009— 25 стр.