When planning and purchasing cable assemblies for any installation, verify from your supplier that they provide connector end-faces that meet or exceed industry standards on end-face cleanliness (for example, IEC 61300-3-35). Meeting these standards is common...
Mating a clean ferrule end-face to a contaminated ferrule end-face can only result in two contaminated end-faces, and a very good chance of permanently damaging / scarring the smooth glass end-face of both. Cleanliness, as we know, counts. Luckily we have...