Hi Bob: I do not know what the commercial fluids contain, but I do mix my own using 99% isopropyl alcohol (about ½ volume) and distilled water (the other ½ volume) to which I add a drop or two of Ilfotol (a wetting agent). I vaguely remember, I got this idea from one of Richard's posts a good while ago. Cheers, - Andrew. From: pure-silver-bounce@xxxxxxxxxxxxx [mailto:pure-silver-bounce@xxxxxxxxxxxxx] On Behalf Of BOB KISS Sent: August 31, 2009 12:11 PM To: pure-silver@xxxxxxxxxxxxx Subject: [pure-silver] WHAT IS LENS CLEANING FLUID? DEAR LIST, Does anyone know the composition of lens cleaning fluid? I am tired of buying those stupid little bottles when they happen to show up in Barbados. It must be possible to mix my own. One of our local repair technicians uses glass cleaner (like Windex) but I thought I had read that using something like that might damage the coatings. Soooooooooooooo, if anyone knows how to mix my own lens cleaning fluid, please advise. CHEERS! BOB Please check my website: http://www.bobkiss.com/ "Live as if you are going to die tomorrow. Learn as if you are going to live forever". Mahatma Gandhi __________ Information from ESET NOD32 Antivirus, version of virus signature database 4384 (20090831) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com