German standard methods for the examination of water, waste water and sludge - Anions (Group D) - Part 23: Determination of selenium by atomic absorption spectrometry (D 23)
Edition 1994-10

Optics and photonics - Environmental test methods - Part 9: Solar radiation and weathering (ISO 9022-9:2016)
Edition 2016-12

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

Hot rolled spring steel flat bars - Part 1: Flat bars - Dimensions and tolerances on shape and dimensions; German version EN 10092-1:2003
Edition 2004-01

Safe transport of radioactive materials - Leakage testing on packages (ISO 12807:2018); German version EN ISO 12807:2021
Edition 2021-05

Acoustics - Hearing protectors - Part 2: Estimation of effective A-weighted sound pressure levels when hearing protectors are worn (ISO 4869-2:2018); German version EN ISO 4869-2:2018
Edition 2019-10

Chemical disinfectants and antiseptics - Hygienic handrub - Test method and requirements (phase 2/step 2); German version EN 1500:2013
Edition 2017-10

Security and resilience - Security management systems - Requirements (ISO 28000:2022)
Edition 2023-11

Pumping stations; design, construction and operation
Edition 1992-03

Fault tree analysis (FTA) (IEC 61025:2006); German version EN 61025:2007
Edition 2007-08