Test charts for micrography - Part 4: Test chart B for optical density and for determination of scale of reproduction
Edition 2013-03

Digital Enhanced Cordless Telecommunications (DECT) - Common Interface (CI); Test Case Library (TCL) - Part 4: Test Suite Structure (TSS) and Test Purposes (TP); Data Link Control (DLC) layer (Endorsement of the English version EN 300497-4 V 0.3.0 (1999-10) as German standard)
Edition 2000-07

Digital Enhanced Cordless Telecommunications (DECT) - DECT Packet Radio Service (DPRS) Test Case Library (TCL) - Part 4: Test Suite Structure (TSS) and Test Purposes (TP); Data Link Control (DLC) layer (Endorsement of the English version EN 301469-4 V 1.1.1 (2000-10) as German standard)
Edition 2002-05

Integrated Services Digital Network (ISDN) - Narrowband Multi-service Delivery System (NMDS) - Part 4: Test Suite Structure and Test Purposes (TSS&TP) specification for the network layer (NTN side) (Endorsement of the English version EN 301141-4 V 1.1.1 (2002-02) as German Standard)
Edition 2002-11

Electromechanical components for electronic equipment - Basic testing procedures and measuring methods - Part 1: General - Section 4: Test 1d: Contact protection effectiveness (scoop-proof) (IEC 60512-1-4:1997); German version EN 60512-1-4:1997, Corrigendum to DIN EN 60512-1-4:1998-02; (IEC-Cor. :2000 to IEC 60512-1-4:1997)
Edition 2012-07

Gas-fired sorption appliances for heating and/or cooling with a net heat input not exceeding 70 kW - Part 4: Test methods; German version EN 12309-4:2015, Corrigendum to DIN EN 12309-4:2015-03
Edition 2015-10

Foot and leg protectors - Requirements and test methods for footwear components - Part 4: Non-metallic perforation resistant inserts (ISO 22568-4:2021); German version EN ISO 22568-4:2021
Edition 2022-03

Heat-treatable steels, alloy steels and free-cutting steels - Part 4: Free-cutting steels (ISO 683-4:2016); German version EN ISO 683-4:2018
Edition 2018-09