U of S | Mailing List Archive | alt-photo-process-l | Re: Acids

Re: Acids

On Sun, 7 Sep 2008, Christina Z. Anderson wrote:

This is a theoretical subject, of course, because I don't even use full strength ammonium dichromate in my mix--only a 15%, so I personally would use the full strength if I were to use paper negatives. ..
My experience with paper negs is that if they're waxed, for instance with bees wax, the times are (depending on the light) about 15 minutes. Is that very long?