German standard methods for the examination of water, waste water and sludge - Anions (group D) - Part 29: Spectrometric determination of nitrate with sulfosalicylic acid (D 29); ISO 7890-3:1988, modified
Edition 1994-11

Quantities and units - Part 3: Space and time (ISO 80000-3:2019); German version EN ISO 80000-3:2020
Edition 2021-12

Surface active agents - Colorimetric characterization of optically clear coloured liquids (products) as X, Y, Z tristimulus values in transmission; German version EN 1557:1996
Edition 1997-03

Water quality; determination of anionic surfactants by measurement of the methylene blue index MBAS (ISO 7875-1:1984, modified); German version EN 903:1993
Edition 1994-01

Magnetic materials - Part 2: Methods of measurement of the magnetic properties of electrical steel strip and sheet by means of an Epstein frame (IEC 60404-2:1996 + A1:2008); German version EN 60404-2:1998 + A1:2008
Edition 2009-01

Photocatalysis - Glossary of terms; German version EN 16981:2021
Edition 2021-12

Binders for paints and varnishes - Rosin - Sampling and sample preparation for colour measurement (ISO 13632:2012); German version EN ISO 13632:2012
Edition 2012-10

Magnetic materials - Methods of measurement of magnetic properties of electrical steel sheet and strip at medium frequencies; German version EN 10252:1997
Edition 1997-05

Air quality - Determination of ozone in ambient air - Ultraviolet photometric method (ISO 13964:1998)
Edition 1999-12

Ambient air quality - Atmospheric measurements near ground with FTIR spectroscopy; German version EN 15483:2008
Edition 2009-02