Broadband Integrated Services Digital Network (B-ISDN) - AAL Type 2 Signalling protocol; Capability Set 1 - Part 4: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification (Endorsement of the English version EN 301816-4 V 1.1.2 (2002-04) as German Standard)
Edition 2002-12

Integrated Services Digital Network (ISDN) - Digital Subscriber Signalling System No. one (DSS1) and Signalling System No. 7 (SS7) protocols; Call Forwarding on Not Reachable (CFNRc) supplementary service for Cordless Terminal Mobility (CTM) phase 1 - Part 4: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the user (Endorsement of the English version EN 302094-4 V 1.1.1 (2002-02) as German Standard)
Edition 2002-12

Forged steel eyebolts grade 4 for general lifting purposes (ISO 3266:2010 + Amd 1:2015); German version EN ISO 3266:2010 + A1:2015
Edition 2016-05

Natural gas - Determination of composition with defined uncertainty by gas chromatography - Part 4: Determination of nitrogen, carbon dioxide and C₁ to C₅ and C₆₊ hydrocarbons for a laboratory and on-line measuring system using two columns (ISO 6974-4:2000); German version EN ISO 6974-4:2001
Edition 2002-06

Building environment design - Embedded radiant heating and cooling systems - Part 4: Dimensioning and calculation of the dynamic heating and cooling capacity of Thermo Active Building Systems (TABS) - AMENDMENT 1 (ISO 11855-4:2021/DAM 1:2023); German and English version EN ISO 11855-4:2021/prA1:2023
Edition 2023-04

Textiles - Determination of abrasion resistance of fabrics by the Martindale method - Part 4: Assessment of appearance change (ISO 12947-4:1998+Cor. 1:2002); German version EN ISO 12947-4:1998+AC:2006
Edition 2007-04

Petroleum and natural gas industries - Design and operation of subsea production systems - Part 4: Subsea wellhead and tree equipment (ISO 13628-4:2010 + Cor. 1:2011); English version EN ISO 13628-4:2010 + AC:2011, only on CD-ROM
Edition 2011-09

Microbiology of the food chain - Method validation - Part 4: Protocol for method validation in a single laboratory - AMENDMENT 1: Validation of a larger test portion size for qualitative methods (ISO 16140-4:2020/DAM 1:2023); German and English version EN ISO 16140-4:2020/prA1:2023
Edition 2023-08

Protective clothing - Test methods for clothing providing protection against chemicals - Part 4: Determination of resistance to penetration by a spray of liquid (spray test) (ISO 17491-4:2008 + Amd. 1:2016); German version EN ISO 17491-4:2008 + A1:2016
Edition 2016-09