German standard methods for the examination of water, waste water and sludge; test methods using water organisms (group L); determination of oxygen production and oxygen consumption in an aquatic environment (SPG and SVG) by means of the light and dark bottle method (L 13) (determination of biogenic aeration rate)
Edition 1983-09

Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 3-29: Examinations and measurements - Spectral transfer characteristics of DWDM devices (IEC 61300-3-29:2014); German version EN 61300-3-29:2014
Edition 2015-02

German standard methods for the examination of water, waste water and sludge - General information (group A) - Part 45: Interlaboratory comparisons for proficiency testing of laboratories (A 45)
Edition 2023-12

Particle size analysis - Sieving analysis - Part 2: Procedure
Edition 2016-08

Bio-based products - Life Cycle Assessment; German version EN 16760:2015
Edition 2016-02

Personal eye-protection - Automatic welding filters; German version EN 379:2003+A1:2009
Edition 2009-07

Spectral measurement of radiation - Spectral isolation - Definitions and characteristics
Edition 2021-09

Ultrasonics - Surgical systems - Measurement and declaration of the basic output characteristics (IEC 61847:1998); German version EN 61847:1998
Edition 1998-09

Water quality - Method for assessment of fish damage in pumps and turbines used in pumping stations and hydropower plants; German and English version prEN 18110:2024
Edition 2024-08

Acoustics - Determination of sound power levels of multisource industrial plants for evaluation of sound pressure levels in the environment - Engineering method (ISO 8297:1994 + Amd.1:2021)
Edition 2023-10