Archived posting to the Leica Users Group, 2003/08/13
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Yes, I remember using Cibachrome in the very early 70's. It was something in the bleach step that they warned about, the current material uses sulfuric acid which you neutralize with bicarbonate before disposal. But that was then and we are talking about modern processes. Don dorysrus@mindspring.com - -----Original Message----- From: owner-leica-users@mejac.palo-alto.ca.us [mailto:owner-leica-users@mejac.palo-alto.ca.us] On Behalf Of Eric Welch Sent: Wednesday, August 13, 2003 8:16 PM To: leica-users@mejac.palo-alto.ca.us Subject: Re: [Leica] How do you dispose of your darkroom chemicals? It depends on which color process. I remember using an early Cibachrome process that was so toxic they said pregnant women should not ever enter a room where it was being used. I quit that stuff pretty quick! On Wednesday, August 13, 2003, at 06:46 AM, Karen Nakamura wrote: > For color, the most toxic thing is the formaldehyde used in the final > rinse (along with the silver in the fix). I'd try to retain the rinse > and bring it to your local toxic waste center. Eric Welch Carlsbad, CA http://www.jphotog.com There are 2 theories to arguing with a woman... neither works. - Will Rogers. - -- To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html - -- To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html