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

Zinc and zinc alloys; determination of indium and thallium by atomic absorption spectrometry
Edition 1985-04

Air quality - General aspects - Units of measurement (ISO 4226:2007)
Edition 2009-02

Water quality - Determination of selected phenoxyalkanoic herbicides, including bentazones and hydroxybenzonitriles by gas chromatography and mass spectrometry after solid phase extraction and derivatization (ISO 15913:2000); German version EN ISO 15913:2003
Edition 2003-05

Ophthalmic optics - Contact lenses and contact lens care products - Determination of preservative uptake and release (ISO 11986:2017); German version EN ISO 11986:2017
Edition 2018-04

Water quality - Determination of microcystins - Method using solid phase extraction (SPE) and high performance liquid chromatography (HPLC) with ultraviolet (UV) detection (ISO 20179:2005)
Edition 2007-10

German standard methods for the examination of water, waste water and sludge - Jointly determinable substances (group F) - Part 36: Determination of selected active substances of plant protection products and other organic substances in water - Method using high performance liquid chromatography and mass spectrometric detection (HPLC-MS/MS or -HRMS) after direct injection (F 36)
Edition 2014-09

German standard methods for the examination of water, waste water and sludge - Jointly determinable substances (group F) - Part 35: Determination of selected phenoxyalkyl carbonic acids and further acid plant treatment agents - Method using high performance liquid chromatography and mass spectrometric detection (HPLC-MS/MS) (F 35)
Edition 2010-10

Chemicals used for treatment of water intended for human consumption - Ammonia solution; German version EN 12122:2005
Edition 2005-08

Chemicals used for treatment of water intended for human consumption - Phosphoric acid; German version EN 974:2003
Edition 2004-01