Don't add too much ascorbic acid, however, as you will kill the stain.

What I would recommend is that you mix up a 1% solution of ascorbic acid and add about 10 mls of this solution per liter of working solution of Pyrocat-HD. This will increase the energy of the developer slighly as it reduces B+F by slowing down oxidation.

For my minimal agitation work I use a dilution of 1.5:1:150, which is not all that different from what Steve is using.

Sandy

Quote Originally Posted by Steve Sherman
Jim,

Pot Carbonate is an accelerator and increases the energy of the developer. When mixed 1 to 1 with solution A and during extended periods of time in developer can increase film base fog. I have reduced Pot Carbonate up to 40 % of A with good results.

When designing negatives for projection I would also try a small amount of Ascorbic Acid in conjunction with reduced Pot Carbonate. Try 3:2:200 with 1 part of Ascorbic Acid for contact prints and evaluate.

I got Ascorbic Acid from a local health food store. The brand name NOW is said to be the most pure and comes in easy to dissolve powder form.

Keep us posted. Steve