Archived posting to the Leica Users Group, 1999/11/29
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]This is a multi-part message in MIME format. - ------=_NextPart_000_0004_01BF3A94.83C28F40 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable As promised I did some research on film cleaners. The TV engineer that = I know says that they used 1,1,1 Tricloroethane as a solvent and a film = cleaner at the TV station where he used to work. This is no longer = sold. One old can that I looked at said that it is dangerous to the = ozone layer. It also says that if you heat it it forms hydrocloric = acid! =20 There is an environmentally sound substitute for triclorethane but = nobody I know has tried it on film. I found an empty bottle of Kodak film cleaner and its listed ingredents = are heptane, and 1,1,2 tricloro- 1,2,2 trifluroethane. Sounds similar = but I'm no chemist. Finally I talked to some people who process and duplicate lots of = slides. They recommend a product called PEC-12. Its specifically made = to clean photographic emulsions. Its kind of expensive. Details can be = found at www.photosol.com Mike D - ------=_NextPart_000_0004_01BF3A94.83C28F40 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <!DOCTYPE HTML PUBLIC "-//W3C//DTD W3 HTML//EN"> <HTML> <HEAD> <META content=3Dtext/html;charset=3Diso-8859-1 = http-equiv=3DContent-Type> <META content=3D'"MSHTML 4.72.3110.7"' name=3DGENERATOR> </HEAD> <BODY bgColor=3D#ffffff> <DIV><FONT color=3D#000000 size=3D2>As promised I did some research on = film=20 cleaners. The TV engineer that I know says that they used 1,1,1=20 Tricloroethane as a solvent and a film cleaner at the TV station where = he used=20 to work. This is no longer sold. One old can that I looked = at said=20 that it is dangerous to the ozone layer. It also says that if you = heat it=20 it forms hydrocloric acid! </FONT></DIV> <DIV><FONT color=3D#000000 size=3D2></FONT> </DIV> <DIV><FONT color=3D#000000 size=3D2>There is an environmentally sound = substitute for=20 triclorethane but nobody I know has tried it on film.</FONT></DIV> <DIV><FONT color=3D#000000 size=3D2></FONT> </DIV> <DIV><FONT color=3D#000000 size=3D2> <DIV><FONT color=3D#000000 size=3D2>I found an empty bottle of Kodak = film cleaner=20 and its listed ingredents are heptane, and 1,1,2 tricloro- 1,2,2=20 trifluroethane. Sounds similar but I'm no chemist.</FONT></DIV> <DIV><FONT color=3D#000000 size=3D2></FONT> </DIV> <DIV><FONT color=3D#000000 size=3D2>Finally I talked to some people who = process and=20 duplicate lots of slides. They recommend a product called = PEC-12. =20 Its specifically made to clean photographic emulsions. Its kind of = expensive. Details can be found at <A=20 href=3D"http://www.photosol.com/pec-12c.html">www.photosol.com</A></FONT>= </DIV> <DIV><FONT color=3D#000000 size=3D2></FONT> </DIV> <DIV><FONT color=3D#000000 size=3D2>Mike = D</FONT></DIV></FONT></DIV></BODY></HTML> - ------=_NextPart_000_0004_01BF3A94.83C28F40--