Sectional specification: electromechanical all-or-nothing relays (including relays for severe environmental conditions); german version EN 116200:1991
Edition 1992-02

Telecontrol equipment and systems; part 4: performance requirements (IEC 60870-4:1990); german version HD 546.4 S1:1992
Edition 1992-10

Investigation of solids - Pre-treatment, preparation and processing of samples for chemical, biological and physical investigations
Edition 2009-07

German construction contract procedures (VOB) - Part A: General provisions relating to the award of construction contracts
Edition 2019-09

German standard methods for the analysis of water, waste water and sludge; Individual components (Group P); Determination of hydrazine (P 1)
Edition 1982-03

Test methods for assessing the performance of gas-phase air cleaning media and devices for general ventilation - Part 2: Gas-phase air cleaning devices (GPACD) (ISO 10121-2:2013); German version EN ISO 10121-2:2013
Edition 2013-08

Metallic materials - Instrumented indentation test for hardness and materials parameters - Part 1: Test method (ISO 14577-1:2015); German version EN ISO 14577-1:2015
Edition 2015-11

Semiconductor optoelectronic devices for fibre optic system applications - Part 2: Measuring methods (IEC 62007-2:2009); German version EN 62007-2:2009
Edition 2009-09

Water quality - Determination of the inhibitory effect of water samples on the light emission of Vibrio fischeri (Luminescent bacteria test) - Part 1: Method using freshly prepared bacteria (ISO 11348-1:2007 + Amd 1:2018); German version EN ISO 11348-1:2008 + A1:2018
Edition 2023-12

Water quality - Determination of the inhibitory effect of water samples on the light emission of Vibrio fischeri (Luminescent bacteria test) - Part 3: Method using freeze-dried bacteria (ISO 11348-3:2007 + Amd 1:2018); German version EN ISO 11348-3:2008 + A1:2018
Edition 2023-12