German standard methods for the examination of water, waste water and sludge - Sub-animal testing (group T) - Part 4: Determination of the genotoxic potential using the Salmonella microsome test (Ames Test) (T 4)
Edition 1999-12

Aerospace series - Connectors, plug and receptacle, electrical, rectangular, interchangeable insert type, rack to panel, operating temperature 150 °C continuous - Part 009: Size 4 plug - Product standard; German and English version EN 3682-009:2013
Edition 2013-05

Aerospace series - Connectors, plug and receptacle, electrical, rectangular, interchangeable insert type, rack to panel, operating temperature 150 °C continuous - Part 008: Size 4 receptacle - Product standard; German and English version EN 3682-008:2013
Edition 2013-05

Electronic data interchange for administration, commerce and transport (EDIFACT) - Application level syntax rules (Syntax version number: 4, Syntax release number: 1) - Part 5: Security rules for batch EDI (authenticity, integrity and non-repudiation of origin) (ISO 9735-5:2002)
Edition 2004-01

Portable equipment for projecting extinguishing agents supplied by firefighting pumps - Portable foam equipment - Part 4: High expansion foam generators PN 16; German version EN 16712-4:2018
Edition 2018-10

Monolithic (unshaped) refractory products - Part 7: Tests on pre-formed shapes (ISO 1927-7:2012); German version EN ISO 1927-7:2012
Edition 2013-04

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

Electronic data interchange for administration, commerce and transport (EDIFACT) - Application level syntax rules (Syntax version number: 4, Syntax release number: 1) - Part 3: Syntax rules specific to interactive EDI (ISO 9735-3:2002)
Edition 2004-01

Glass in Building - Design and construction rules - Part 4: Additional requirements for barrier glazing
Edition 2013-07

Engineering survey - Part 4: Deformation measurements
Edition 2010-09