Lighting of road tunnels and underpasses - Part 2: Calculation and measurement
Edition 2011-06

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

Geometrical product specifications (GPS) - Flatness - Part 2: Specification operators (ISO 12781-2:2011); German version EN ISO 12781-2:2011
Edition 2011-07

Geometrical product specifications (GPS) - Cylindricity - Part 2: Specification operators (ISO 12180-2:2011); German version EN ISO 12180-2:2011
Edition 2011-07

Surface active agents - Determination of hydroxyl value - p-Toluensulfonyl isocyanate (TSI) method and potentiometric titration with tetrabutylammonium hydroxide; German version EN 15168:2006
Edition 2007-02

Devices for the disinfection of water using ultraviolet radiation - Part 3: Reference radiometers for devices equipped with UV low pressure lamps - Requirements and testing
Edition 2020-08

Measurement of roughness average Ra and peak count RPc on metallic flat products; German version EN 10049:2013
Edition 2014-03

Corrosion of metals - Electrochemical corrosion tests
Edition 2018-09

Conveyor belts - Electrical conductivity - Specification and test method (ISO 284:2012); German version EN ISO 284:2012
Edition 2013-04

Surface active agents - Sulfated ethoxylated alcohols and alkylphenols - Determination of content of unsulfated matter (ISO 8799:2009); German version EN ISO 8799:2009
Edition 2010-04