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DIN
DIN 38407-53:2025-10
En Vigor
2025-10-01
German standard methods for the examination of water, waste water and
sludge - Jointly determinable substances (group F) - Part 53:
Determination of Trifluoroacetic acid (TFA) in water - Method using
liquid chromatography and mass spectrometric detection (LC-MS/MS) after
direct injection (F 53)
DIN
DIN 4124:2012-01
En Vigor
2012-01-01
Excavations and trenches - Slopes, planking and strutting breadths of
working spaces
