making a larger negative....

glbeas said:

The article does mention using permanganate instead of dichromate for a less toxic version but the bleach in the C-41 kit must have a basic difference from the version in the article. Just curious as to what that difference is. It may be a while before I get my hands on the rest of the supplies needed.

Click to expand...

As I recall Liam Lawless's original instructions, on which Ed Buffaloe bases his article, did not say anything about C-41. The idea that the C-41 bleach with permaganate would work just as well may be based on analgous use from another application. My advice is to forget the C-41 bleach and stay with the one that uses potassium dichromate in the formula. Liam's method worked for me the first time, and every time.


Sandy King

I looked at an E-6 kit and the bleach said it had ferric EDTA whatever that is, I'd place bets on that C-41 bleach being pretty much the same thing. What is ferric EDTA? How many different compounds are out there that will serve as a photographic bleach?