I've been wondering what to do about the loss of R3000 chemistry. In the most recent issue of Photo Techniques magazine (Sept/Oct 2002, p. 18) Robert Chapman lays out the ingredients and approximate ranges (in grams) of each, but doesn't know the exact formulation. Instead he proposes an experimental method for making up differring concentrations of each component in each developer for testing.

Now, this seems like a lot of work, runnign through all those different formulations of each developer and blix (a total of 36 different formulations that he includes in tables), way too much for one guy to experiment with.

I was wondering if some of us R3000/R3 guys might want to team up and handle the job in parts. Currently I have an almost full 12.5/25 gallon R3 kit, and I can use the kit components for two of the chems, while experimenting with the home-made third chem (for example, I might concentrate on the first developer, while using the color dev and blix from the kit) and someone else might concentrate on the color dev (you might still be able to pick up the R3000 first dev and blix from B&H) while a third fellow concentrates on the blix.

I'm not exactly sure how to assess each batch (I guess color test strips from Kodak, but we'd need a color checker or Macbeth chart reader of some kind to quantitate the results).

The risk of spending too much effort on this is, of course, that Kodak and Fuji will stop producing color reversal papers and leave us with Ilfochrome or internegs.