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Message: <blockquote data-quote="OPTIC_NUT" data-source="post: 3171141" data-attributes="member: 121951">A good question, but one that has not been answered completely for the other solvents, even Windex.--------But if we are on the subject of people doing their homework,According to Windex's Wiki entry, the contents in the patent are:--water--isopropyl alcohol--ethylene glycol monobutyl ether--sodium laural sulphate (the detergent)--tetrasodium pyrophosphate--ammonia-dye-perfumeThe ethylene glycol monobutyl ether helps a lot undermining glazed stuff.Generic Windexes often use "butyl cellusolve" instead because this functionis so important (like, for the tear-crust at the EP edges).So the 'popular home formulas for "Windex" are missing a few things.----------------------------------------I sometimes avoid Windex for external cleanings and use 91% isopropyl when it looks like the slower evaporation rate and very high film strength (due to detergent)might  push outside contaminants around and under the eyepiecesurface element.Nothing is perfect for everything.-------------------------And what of the Baader fluid in question?<a href="http://www.astro-physics.com/index.htm?products/accessories/cleaningproducts/cleaningsystem" target="_blank">http://www.astro-physics.com/index.htm?products/accessories/cleaningproducts/cleaningsystem</a>They claim a special ability to remove biofilm, like mold. Probably related to theirother enzyme-based product, some super-duper NASA enzyme plus stuff. So....maybe, if I had an especially gnarly job.  When Windex doesn't remove the tendrils, instead of Bon Ami.</blockquote>

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