Hi Rain-X in is the same family, and is used on auto windshields. My experience as far as windshields goes is it works great in the beginning, and not so hot after a few rains i.e. smearing during wiper action. Then it is almost impossible to remove from the glass. I am not sure it would repel finger smudges. I find the best procedure is ware antistatic gloves while assembling the negative, and glass carrier. Controlling dust during assemble can sometimes be an adventure in patience. Jonathan -----Original Message----- From: pure-silver-bounce@xxxxxxxxxxxxx [mailto:pure-silver-bounce@xxxxxxxxxxxxx] On Behalf Of Breukel, C. (HKG) Sent: Wednesday, January 05, 2005 7:27 AM To: Pure Silver (F) (E-mail) Subject: [pure-silver] Dimethyldichlorosilane Hi, I obtained a bottle of Dimethyldichlorosilane, a solution which is used to make glass repellent, mostly use in a lab setting. (see http://www.krackeler.com/products/fid/2725). I was wondering what I could do with it (besides using it in the lab), and it occured to me it might be usefull to make the glss in my 4*5 neg carrier repllent to finger print marks, perhaps dust, etc. I wonder though if there are possible adverse effects on the negative, Thanks, Best, Cor ======================================================================== ===================================== To unsubscribe from this list, go to www.freelists.org and logon to your account (the same e-mail address and password you set-up when you subscribed,) and unsubscribe from there. ============================================================================================================= To unsubscribe from this list, go to www.freelists.org and logon to your account (the same e-mail address and password you set-up when you subscribed,) and unsubscribe from there.