Water quality - Determination of nitrogen - Part 1: Method using oxidative digestion with peroxodisulfate (ISO 11905-1:1997); German version EN ISO 11905-1:1998
Edition 1998-08

Water quality - Determination of acute toxicity of marine or estuarine sediment to amphipods (ISO 16712:2005); German version EN ISO 16712:2006
Edition 2007-02

Water quality - Guidance standard on assessing the hydromorphological features of transitional and coastal waters; German version EN 16503:2014
Edition 2014-11

Water quality - Guidance on determining the degree of modification of the hydromorphological features of transitional and coastal waters; German version EN 17123:2018
Edition 2019-07

Water safety signs and beach safety flags - Part 2: Specifications for beach safety flags - Colour, shape, meaning and performance (ISO 20712-2:2007)
Edition 2008-08

Petroleum, petrochemical and natural gas industries - Prevention of corrosion on pipeline systems influenced by stray currents (ISO 21857:2021); German version EN ISO 21857:2021
Edition 2022-08

Water quality - Guidance on sampling and processing of the pupal exuviae of Chironomidae (Order Diptera) for ecological assessment; German version EN 15196:2006
Edition 2006-10

Petroleum and natural gas industries - Specific requirements for offshore structures - Part 1: Metocean design and operating considerations (ISO 19901-1:2015); English version EN ISO 19901-1:2015, only on CD-ROM
Edition 2016-04

Oil and gas industries including lower carbon energy - Specific requirements for offshore structures - Part 1: Metocean design and operating considerations (ISO/DIS 19901-1:2024); English version prEN ISO 19901-1:2024
Edition 2024-09

Water quality - Guidance on the scope and selection of fish sampling methods; German version EN 14962:2006
Edition 2006-07