Many companies sell cleaning kits for fiber optics, including AFL, NEPTEC, Chemtronics., NetOptics Etc. They are readily available from distributors. Some are dry, some us cleaning solutions. They are all good solutions if you follow their directions.
You may use lint free pads and isopropyl alcohol to clean the connectors. Some
solvents MIGHT attack epoxy, so only reagent-grade 99% isopropyl alcohol should be used. Never use cotton swabs or cloth - it will leave threads behind. Clean and dry the end of the ferrule just before insertion.
December 2, 2011