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

German standard methods for the examination of water, waste water and sludge; bio-assays (group L); determining the tolerance of Daphnia to the toxicity of waste water by way of a dilution series (L 30)
Edition 1989-03

Personal fall protection equipment - Sit harnesses; German version EN 813:2024
Edition 2024-05

Steel forgings for pressure purposes - Part 2: Ferritic and martensitic steels with specified elevated temperatures properties; German version EN 10222-2:2017+A1:2021
Edition 2021-08

Safety of machinery - Ergonomics requirements for the design of displays and control actuators - Part 1: General principles for human interactions with displays and control actuators; German version EN 894-1:1997+A1:2008
Edition 2009-01

Deviations of Shaft Centre Distances and Shaft Position Tolerances of Casings for Cylindrical Gears
Edition 1980-11

Optics and optical instruments - Field procedures for testing geodetic and surveying instruments - Part 5: Total stations (ISO 17123-5:2018)
Edition 2022-06

Corrosion of metal - Corrosion investigations of bimetallic corrosion in electrolytic solutions
Edition 2022-02

Chemical disinfectants and antiseptics - Quantitative suspension test for the evaluation of bactericidal activity against Legionella of chemical disinfectants for aqueous systems - Test method and requirements (phase 2, step 1); German version EN 13623:2020
Edition 2020-12

ISO general purpose metric screw threads - Gauges and gauging (ISO 1502:1996)
Edition 1996-12