Electric and optical fibre cables - Test methods for non-metallic materials - Part 403: Miscellaneous tests - Ozone resistance test on cross-linked compounds

IEC 60811-403 Ed.1: Electric and optical fibre cables - Test methods for non-metallic materials - Part 403: Miscellaneous tests - Ozone resistance test on crosslinked compounds

Application of building products in structures — Part 403: Rules for the application of aggregate concrete masonry units (dense and lightweight aggregates) according to DIN EN 771-3:2015-11

Wearable electronic devices and technologies - Part 403-1: Test method of surface electromyography sensors onto forearm and hand for wearable applications (IEC 124/316/CDV:2025); German and English version prEN IEC 63203-403-1:2025