..Maybe for Optics
manufacturing, or assembly line clean-up, but.. Show me One ref / Op-manual, etc, from either NEOS, G&H, or Any of the Ion manuf's (SP, Coh, etc..) where they suggested / proposed Freon -
at all - let alone
over Sp-grade Me and Acetone, and I'll happily stand corrected.. I've never been taught / heard of using that, especially for AO-xtals, and sensitive Ion optics, ie: the HR / OC and/or Brewsters..
..Not trying to pick a fight
/ saying it
cannot be used, just, again, that for Nate's situ, I'd personally strongly recommend Sp-grade Me / Ac solution, not freon, especially since he said his primary contaminant was Dust, not 'grease'.. In such a case, a more 'aqueous', yet non-water based, solution would be My top choice, anyway...
..For Electronics / PCB cleaning / generic-degreasing, yes, that stuff is magik..
Fwiw..
j