Automatic electrical controls for installation in drinking water systems - Requirements for solenoid valves

Valves for drinking water installations in buildings - Level-controlled shut-off valves in drinking water installations - Requirements and tests

German standard methods for the examination of water, waste water and sludge - General information (group A) - Part 60: Analytical quality assurance for chemical and physicochemical water analysis (A 60)

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)

German standard methods for the examination of water, waste water and sludge - Microbiological methods (group K) - Part 25: Protocol for the validation of alternative confirmation procedures and for verifications of validated alternative confirmation procedures (K 25)

Acoustics - Software for the calculation for workspaces - Quality assurance of software-implemented methods

Acoustics - Noise emissions from road distribution and delivery processes - Part 1: Fundamentals and measurement methods

Condition monitoring and diagnostics of structures

Hollow metallic waveguides - Part 6: Relevant specifications for medium flat rectangular waveguides

Flanges for waveguides - Part 6: Relevant specifications for flanges for medium flat rectangular waveguides