Ul 1685 Ed 5 2025

UL sampling of optical cables

UL 1685 is a smoke-release test for electrical and optical-fiber cables that evaluates flame spread and smoke output under fire conditions. We can assess fiber-optic products for performance and reliability to many published industry standards, such as the Telcordia GR-series standards, international fiber-optic performance standards and to your specifications. Telecommunications and network systems are increasingly making the switch. UL Solutions, a global safety science leader, is a trusted partner for the testing, certification and verification of communications cables, helping to build confidence in cabling quality and safety. Cables are useful, but they can be hazardous if their flame retardant and fire resistant capabilities are unknown. Cable. A practical buyer's guide for checking UL Listed cable evidence before purchase orders, shipment approval, project inspection and long-term maintenance. Do not approve a cable only because “UL” appears on the jacket printing.

[PDF Version]