Plastics piping systems for the trenchless replacement of underground pipeline networks - Part 2: Replacement off the line by horizontal directional drilling and impact moling (ISO 21225-2:2018); German version EN ISO 21225-2:2018
Edition 2019-06

Paints and varnishes - Evaluation of defects on coated surfaces using optical imaging - Part 1: General guidance (ISO 21227-1:2003); German version EN ISO 21227-1:2003
Edition 2003-12

Stationary source emissions - Determination of the mass concentration of dinitrogen monoxide (N₂O) - Reference method: Non-dispersive infrared method (ISO 21258:2010); German version EN ISO 21258:2010
Edition 2010-11

Soil quality - Inhibition of reproduction of the soil mite (Hypoaspis aculeifer) by soil contaminants (ISO 21285:2019); German version EN ISO 21285:2020
Edition 2021-02

Soil quality - Identification of ecotoxicological test species by DNA barcoding (ISO 21286:2019); German version EN ISO 21286:2020
Edition 2020-09

Cosmetics - Microbiology - Testing of impregnated or coated wipes and masks (ISO 21322:2020); German version EN ISO 21322:2021
Edition 2022-05

Nanotechnologies - Analysis of nano-objects using asymmetrical flow and centrifugal field-flow fractionation (ISO/DIS 21362:2024); German and English version prEN ISO 21362:2024
Edition 2024-10

Nanotechnologies - Analysis of nano-objects using asymmetrical-flow and centrifugal field-flow fractionation (ISO/TS 21362:2018); German version CEN ISO/TS 21362:2021
Edition 2021-07

Soil quality - Conceptual site models for potentially contaminated sites (ISO 21365:2019); German version EN ISO 21365:2020
Edition 2021-02

Adhesives - Guidelines for the fabrication of adhesively bonded structures and reporting procedures suitable for the risk evaluation of such structures (ISO 21368:2022); German version EN ISO 21368:2023
Edition 2024-10