Quote Originally Posted by benjiboy View Post
N.A.S.A. use R.O.R to clean their optics http://www.ror.net/ if Lighter fuel, naptha or isopropanol were better products they would use them.
Seriously? Most professional lens techs are using high grade ethanol and/or heptane or hexane to clean lenses. What do you think naphtha is? It's pentane/heptane/hexane based on the particular distillation process and "cut" used. Why do they use it? It's entirely non polar, will not harm surrounding materials, and evaporates incredibly fast.

Everything else is overpriced water+alcohol. Lens cleaner manufactures are having a laugh.