Electroacoustics - Measurement microphones - Part 2: Primary method for pressure calibration of laboratory standard microphones by the reciprocity technique (IEC 61094-2:2009/AMD1:2022); German and English version EN 61094-2:2009/A1:2022

Tunnel boring machines - Air locks - Part 2: Safety requirements for the use of non-air breathing mixtures and saturation techniques in personnel locks and for pressurised transfer shuttles; German and English version prEN 12110-2:2023

Thermal performance of windows, doors and shutters - Calculation of thermal transmittance - Part 2: Numerical method for frames - Amendment 1 (ISO 10077-2:2017/DAM 1:2023); German and English version EN ISO 10077-2:2017/prA1:2023

Road vehicles - Connections for on-board electrical wiring harnesses - Part 2: Definitions, test methods and general performance requirements (ISO/DIS 8092-2:2022); English version prEN ISO 8092-2:2022

Influence of cementitious products on water intended for human consumption - Test methods - Part 2: Influence of migration from siteapplied cementitious products and associated noncementitious products on the organoleptic parameters; German and English version prEN 14944-2:2023

District heating pipes - Bonded twin pipe systems for directly buried hot water networks - Part 2: Factory made fitting and valve assemblies of steel service pipes, polyurethane thermal insulation and one casing of polyethylene; German and English version prEN 15698-2:2023

Digital Enhanced Cordless Telecommunications (DECT) - Harmonised Standard for access to radio spectrum - Part 2: DECT-2020 NR (Endorsement of the English version EN 301 406-2 V3.0.1 (2023-04) as a German standard)

Test requirements for accessories for use on power cables of rated voltage from 3,6/6(7,2) kV up to 20,8/36(42) kV - Part 2: Cables with impregnated paper insulation; German and English version prHD 629.2 S3:2023

Vitreous and porcelain enamels - Glass-lined apparatus for process plants - Part 2: Designation and specification of resistance to chemical attack and thermal shock (ISO/DIS 28721-2:2023); German and English version prEN ISO 28721-2:2023

Snow throwers - Safety requirements and test procedures - Part 2: Pedestrian-controlled snow throwers – Amendment 1 (ISO 8437-2:2019/DAM 1:2022); German and English version EN ISO 8437-2:2021/prA1:2022