1. BS EN IEC 61753-021-02. Fibre optic interconnecting devices and passive components. Performance standard. Part 021-02. Single-mode fibre optic connectors terminated as pigtails and patchcords for category C. Controlled environment (14th January 2022) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (23 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗