Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 2-21: Tests - Composite temperature/humidity cyclic test (IEC 61300-2-21:2009); German version EN 61300-2-21:2010
Edition 2010-08

Concepts, abbreviations and symbols in geodesy - Part 3: Hydrographic surveying
Edition 2012-10

Water engineering of agricultural lands - Terms - Part 3: Soil science, soil taxonomy, soil investigation
Edition 2002-03

Environmental testing - Part 3-4: Supporting documentation and guidance; Damp heat tests (IEC 60068-3-4:2001); German version EN 60068-3-4:2002
Edition 2002-11

Electronic railway equipment - Train communication network (TCN) - Part 3-4: Ethernet Consist Network (ECN); German version EN 61375-3-4:2014/A11:2017
Edition 2018-03

Audiovisual video and television equipment and systems; part 21: video tape leader and trailer for education and training applications (IEC 60574-21:1992); German version EN 60574-21:1993
Edition 1994-05

Determination of solid state density - Part 3: Gas buoyancy method
Edition 2019-03

Ladders for special professional use - Part 3: Ladders for building sites
Edition 2019-06

Water engineering; terms; part 2: waterpower plants
Edition 1994-07

X-ray spectrometry - X-ray emission- and X-ray fluorescence analysis (XRF) - Part 1: Definitions and basic principles
Edition 2008-08