Water quality - Determination of biochemical oxygen demand after n days (BODₙ) - Part 1: Dilution and seeding method with allylthiourea addition (ISO 5815-1:2019); German version EN ISO 5815-1:2019
Edition 2020-11

Pin type insulators N; rated voltage below 1 kV
Edition 1966-12

Measurement of noise emitted by accelerating road vehicles - Engineering method - Part 1: M and N categories (ISO 362-1:2015)
Edition 2017-10

Water quality - Determination of free chlorine and total chlorine - Part 1: Titrimetric method using N,N-diethyl-1,4-phenylenediamine (ISO 7393-1:1985)
Edition 2000-03

Electrical and electronic circuit breakers - Part 28: Arc fault detection devices with circuit breakers (AFDD-c.b) with release characteristic B and C, with isolating function, 1+N, 10 A or 16 A rated current, rated voltage AC 230 V, detail standard; Text in German and English
Edition 2024-06

Agricultural wheeled tractors - Rear-mounted three-point linkage - Categories 1 N, 1, 2 N, 2, 3 N, 3, 4 N and 4
Edition 2020-09-25

Dynamic modules - Part 5-2: Test methods - 1×N fixed-grid WSS - Dynamic crosstalk measurement (IEC 62343-5-2:2018); German version EN IEC 62343-5-2:2018
Edition 2019-01

Fibre optic interconnecting devices and passive components - Performance standard - Part 031-2: Non-connectorized single-mode 1×N and 2×N non-wavelength-selective branching devices for Category C - Controlled environment (IEC 61753-031-2:2014); German version EN 61753-031-2:2014
Edition 2015-07

Dynamic modules. Design guidelines. Survey results on performance specifications for 1 × N wavelength selective switches
Edition 2023-02-15

Fibre optic interconnecting devices and passive components performance standard - Part 2-3: Non-connectorised single-mode 1×N and 2×N non-wavelength-selective branching devices for category U; Uncontrolled environment (IEC 61753-2-3:2001); German version EN 61753-2-3:2001
Edition 2002-08