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Hydrogen Technologies Standards form the basic framework for market ramp-up
More information
Climate change Standards and specifications support climate targets
More information
Smart Farming Standards and specifications are drivers for the digitalization of agriculture
More information

Standards [CURRENT]

OENORM EN ISO 8689-2
Water quality - Biological classification of rivers - Part 2: Guidance on the presentation of biological quality data from surveys of benthic macroinvertebrates (ISO 8689-2:2000)

Title (German)

Wasserbeschaffenheit - Biologische Klassifizierung von Flüssen - Teil 2: Richtlinie zur Darstellung von biologischen Beschaffenheitsdaten aus Untersuchungen von benthischen Makroinvertebraten in Fließgewässern (ISO 8689-2:2000)

Edition 2000-08-01

Original language German

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Hydrogen Technologies Standards form the basic framework for market ramp-up

Climate change Standards and specifications support climate targets

Smart Farming Standards and specifications are drivers for the digitalization of agriculture

OENORM EN ISO 8689-2 Water quality - Biological classification of rivers - Part 2: Guidance on the presentation of biological quality data from surveys of benthic macroinvertebrates (ISO 8689-2:2000)

Want to learn more?

OENORM EN ISO 8689-2
Water quality - Biological classification of rivers - Part 2: Guidance on the presentation of biological quality data from surveys of benthic macroinvertebrates (ISO 8689-2:2000)