German standard methods for the examination of water, waste water and sludge; test methods using water organisms (group L); determination of oxygen production by means of the light and dark bottle method under laboratory conditions (SPL) (L 14) (determination of oxygen production potential)
Edition 1983-09

Aircraft ground support equipment - Specific requirements - Part 18: Nitrogen or Oxygen units; German version EN 12312-18:2005+A1:2009
Edition 2009-08

Gas cylinders - Compatibility of cylinder and valve materials with gas contents - Part 3: Autogenous ignition test for non-metallic materials in oxygen atmosphere (ISO 11114-3:2010); German version EN ISO 11114-3:2010
Edition 2011-04

Chemical analysis of ferrous materials - Determination of oxygen in steel and iron - Part 1: Sampling and preparation of steel samples for oxygen determination; German version EN 10276-1:2000
Edition 2000-08

Metallic powders - Determination of oxygen content by reduction methods - Part 3: Hydrogen-reducible oxygen (ISO 4491-3:1997); German version EN ISO 4491-3:2006
Edition 2006-06

Water quality - Determination of dissolved oxygen - Electrochemical probe method (ISO 5814:2012); German version EN ISO 5814:2012
Edition 2013-02

Water quality - Test for inhibition of oxygen consumption by activated sludge for carbonaceous and ammonium oxidation (ISO 8192:2007); German version EN ISO 8192:2007
Edition 2007-05

Gas cylinders - Compatibility of cylinder and valve materials with gas contents - Part 6: Oxygen pressure surge testing (ISO 11114-6:2022); German version EN ISO 11114-6:2022
Edition 2022-12

Testing of lubricants - Determination of oxidation stability of greases - Oxygen method
Edition 2018-02

Soil improvers and growing media - Determination of the aerobic biological activity - Part 1: Oxygen uptake rate (OUR); German version EN 16087-1:2020
Edition 2020-04