German standard methods for the examination of water, waste water and sludge; bio-assays (group L); determining the tolerance of Daphnia to the toxicity of waste water by way of a dilution series (L 30)
Edition 1989-03

German standard methods for the examination of water, waste water and sludge; parameters characterizing effects and substances (group H); determination of the chemical oxygen demand (COD), ranging from 5 to 50 mg/l (H 44)
Edition 1992-05

German Standard Methods for Examination of Water, Waste Water and Sludge; Summary Action and Material Characteristic Parameters (Group H); Determination of the Chemical Oxygen Demand (COD) in the Range over 15 mg/l (H41)
Edition 1980-12

German standard methods for the examination of water, waste water and sludge; bio-assays (group L); surfactant biodegradation and elimination test for simulation of municipal waste water treatment plants (L 26)
Edition 1994-05

Leaching of solid materials - Batch test for the examination of the leaching behaviour of inorganic and organic substances at a liquid to solid ratio of 2 l/kg
Edition 2023-07

Loopback Service Options (LSO) for cdma2000 Spread Spectrum Systems
Edition 2011-12

Stationary source emissions - Determination of mass concentration of sulphur oxides - Standard reference method; German version EN 14791:2017
Edition 2017-05

Plain bearings - Part 4: Electrical insulation
Edition 1997-12

Testing of solid fuels - Determination of the phosphorus content
Edition 2004-06

Fertilizers - Determination of sulfates content using three different methods; German version EN 15749:2022
Edition 2022-10