German standard methods for the examination of water, waste water and sludge; sludge and sediments (group S); determination of oxygen consumption rate (S 6)
Edition 1986-04

German standard methods for the examination of water, waste water and sludge; sludge and sediments (group S); determination of the chemical oxygen demand (COD) (S 9)
Edition 1986-09

German standard methods for the examination of water, waste water and sludge; sludge and sediments (group S); determination of the amenability to anaerobic digestion (S 8)
Edition 1985-06

Fertilizers with declared micronutrient(s) content(s) for leaf spraying. Part 1: micronutrients under mineral chemical combination(s) form, exclusively. Types and specifications
Edition 1990-11-01

Fertilizers. Fertilizers with declared micronutrient(s) content(s) for application to the soil. Part 2: micronutrient(s) in organic combination(s). Types and specifications
Edition 1992-06-01

Fertilizers. Fertilizers with declared micronutrient(s) content(s) for leaf spraying. Part 2: micronutrient(s) in organic combination(s). Types and specifications
Edition 1992-06-01

Soil quality - Determination of arsenic, antimony and selenium in aqua regia soil extracts with electrothermal or hydride-generation atomic absorption spectrometry (ISO 20280:2007)
Edition 2010-05

Single-angle cutters for toolmaking; technical delivery conditions
Edition 1992-03

Milk and milk products - Determination of the sugar contents - High performance anion exchange chromatography with pulsed amperometric detection method (HPAEC-PAD) (ISO 22184:2021); German version EN ISO 22184:2021
Edition 2021-06

Hot rolled products of structural steels - Part 2: Technical delivery conditions for non-alloy structural steels; German version EN 10025-2:2019
Edition 2019-10