Water quality - Sampling - Part 15: Guidance on the preservation and handling of sludge and sediment samples (ISO 5667-15:2009); German Version EN ISO 5667-15:2009
Edition 2010-01

Characterisation of sludges - Settling properties - Part 2: Determination of thickenability; German version EN 14702-2:2006
Edition 2006-06

Water quality - Sampling - Part 13: Guidance on sampling of sludges (ISO 5667-13:2011); German version EN ISO 5667-13:2011
Edition 2011-08

Characterisation of sludges - Filtration properties - Part 2: Determination of the specific resistance to filtration; German version EN 14701-2:2013
Edition 2013-07

Characterization of sludges - Filtration properties - Part 4: Determination of the drainability of flocculated sludge; German version EN 14701-4:2018
Edition 2019-12

Environmental Solid Matrices - Determination of polychlorinated biphenyls (PCB) by gas chromatography - mass selective detection (GC-MS) or electron-capture detection (GC-ECD); German version EN 17322:2020
Edition 2021-03

Sludge, treated biowaste and soil - Determination of elements using inductively coupled plasma mass spectrometry (ICP-MS); German version EN 16171:2016
Edition 2017-01

Nominal value, limiting value, rated value, rating - concepts
Edition 1981-10

Plastics piping systems for industrial applications - Polybutene (PB), polyethylene (PE), polyethylene of raised temperature resistance (PE-RT), crosslinked polyethylene (PE-X), polypropylene (PP) - Metric series for specifications for components and the system (ISO 15494:2015 + Amd 1:2020); German version EN ISO 15494:2018 + A1:2020
Edition 2021-05

Job related proficiency assessment
Edition 2016-07