German standard methods for the examination of water, waste water and sludge; bio-assays (group L); determining the tolerance of green algae to the toxicity of waste water (Scenedesmus chlorophyll fluorescence test) by way of dilution series (L 33)
Edition 1991-03

Ships and marine technology - Manoeuvring of ships - Part 3: Yaw stability and steering (ISO 13643-3:2017); Text in German and English
Edition 2018-09

Geographic information - Geospatial API for tiles - Part 1: Core (ISO/DIS 19177-1:2024); English version prEN ISO 19177-1:2024
Edition 2024-09

Industrial communication networks - Fieldbus specifications - Part 3-4: Data-link layer service definition - Type 4 elements (IEC 61158-3-4:2019); English version EN IEC 61158-3-4:2019, only on CD-ROM
Edition 2020-06

Industrial communication networks - Fieldbus specifications - Part 3-17: Data-link layer service definition - Type 17 elements (IEC 61158-3-17:2007); English version EN 61158-3-17:2008, only on CD-ROM
Edition 2008-09

Optics and photonics - Optical coatings - Part 4: Specific test methods: abrasion, adhesion and resistance to water (ISO 9211-4:2022)
Edition 2023-07

Industrial communication networks - Fieldbus specifications - Part 3-1: Data-link layer service definition - Type 1 elements (IEC 61158-3-1:2014); English version EN 61158-3-1:2014, only on CD-ROM
Edition 2015-07

Application integration at electric utilities - System interfaces for distribution management - Part 11: Common information model (CIM) extensions for distribution (IEC 61968-11:2013); English version EN 61968-11:2013
Edition 2014-02

Value management - Functional expression of the need and functional performance specification - Requirements for expressing and validating the need to be satisfied within the process of purchasing or obtaining a product; German version EN 16271:2012
Edition 2013-03

Electronic fee collection - Charging performance framework (ISO 37444:2023); English version CEN ISO/TS 37444:2023
Edition 2023-09