Conservation of cultural heritage - Methods and materials for cleaning porous inorganic materials; German version EN 17138:2018
Edition 2019-03

Energy management systems - Measuring energy performance using energy baselines (EnB) and energy performance indicators (EnPI) - General principles and guidance (ISO 50006:2014)
Edition 2017-04

Products used for the treatment of swimming pool water - Filter media; German version EN 15798:2022
Edition 2022-10

Products used for treatment of swimming pool water - Powdered activated carbon; German version EN 15799:2022
Edition 2022-10

Products used for treatment of water intended for human consumption - Powdered perlite; German version EN 12914:2012
Edition 2013-01

Maintenance - Documentation for maintenance; German version EN 13460:2009
Edition 2009-08

German standard methods for the examination of water, waste water and sludge - Bio-assays (group L) - Part 37: Determination of the inhibitory effect of water on the growth of bacteria (Photobacterium phosphoreum cell multiplication inhibition test) (L 37)
Edition 1999-04

Energy management systems - Guidance for the implementation, maintenance and improvement of an ISO 50001 energy management system (ISO 50004:2020)
Edition 2021-11

Chemicals used for treatment of water intended for human consumption - Copper sulfate; German version EN 12386:2012
Edition 2013-01

Chemical used for treatment of water intended for human consumption - Antifouling for membranes - Sulfamic acid; German version EN 17841:2024
Edition 2024-05