Heat exchangers - Definitions of performance of heat exchangers and the general test procedure for establishing performance of all heat exchangers; German version EN 305:1997
Edition 1997-07

German standard methods for the examination of water, waste water and sludge; anions (group D); determination of fluoride (D 4)
Edition 1985-07

Air quality - Assessment of the uncertainty of a measurement method under field conditions using a second method as reference (ISO 13752:1998)
Edition 1999-01

Refrigerating systems and heat pumps - Safety switching devices for limiting the pressure - Requirements and tests; German version EN 12263:1998
Edition 1999-01

Image quality assurance in diagnostic X-ray departments - Part 157: X-ray ordinance acceptance and constancy test of image display systems in their environment
Edition 2022-01

European digital cellular telecommunications system - Half rate speech - Part 1: Half rate speech processing functions; English version ETS 300581-1:1995
Edition 1996-07

Methods of measurement on radio receivers for various classes of emission; Part 1: general considerations and methods of measurement; including audiofrequency measurements (identical with IEC 60315-1:1988); german version HD 560.1 S1:1990
Edition 1991-07

Compacting of Concrete by Vibrating; Vibrators and Vibration Mechanics
Edition 1978-12

Simplified representation for kinematics - Part 1: Representation of motion of links; identical with ISO 3952-1:1981
Edition 1995-01

Graphical symbols for diagrams - Part 4: Basic passive components (IEC 60617-4:1996); German version EN 60617-4:1996
Edition 1997-08