Roller ball pens and refills - Part 2: Documentary use (DOC)
Edition 1998-04

Ball point pens and refills - Part 2: Documentary use (DOC)
Edition 1998-05

Water analysis - Guidelines for the determination of total organic carbon (TOC) and dissolved organic carbon (DOC); German version EN 1484:1997
Edition 2019-04

Water quality - Evaluation of the "ready", "ultimate" aerobic biodegradability of organic compounds in an aqueous medium - Method by analysis of dissolved organic carbon (DOC) (ISO 7827:2010); German version EN ISO 7827:2012
Edition 2013-03

Water quality - Determination of total organic carbon (TOC), dissolved organic carbon (DOC), total bound nitrogen (TNb) and dissolved bound nitrogen (DNb) after high temperature catalytic oxidative combustion (ISO 20236:2024); German version EN ISO 20236:2024
Edition 2025-05

Explosive atmospheres - Part 37: Non-electrical equipment for explosive atmospheres - Non-electrical type of protection constructional safety "c", control of ignition sources "b", liquid immersion "k" (ISO 80079-37:2016); German version EN ISO 80079-37:2016
Edition 2016-12

Gel ink ball pens and refills - Documentary use (DOC)
Edition 2009-05-31

Roller ball pens and refills. Part 2: documentary use (DOC)
Edition 1998-09-01

Ball point pens and refills. Part 2: documentary use (DOC)
Edition 1998-09-01

Marking pens - Durability of written line - Documentary use (DOC)
Edition 2025-04