Quote Originally Posted by jlpape View Post
My question is if you really should put in more than the
minimal amount to have enough chemical present to properly
develop the film (i.e. small amounts get used up and give
inconsistent results).
Solution volume and amount of chemistry present are
two different but interrelated matters. For example using
Rodinal at 1:100 dilution only 2.9 ml of the developer are
present; a questionable little amount. At twice the
volume same dilution 5.8 ml are present; plenty.

D-76 is another matter. At 1:1 dilution there is plenty
of chemistry. Perhaps 1:3 enough. I use chemistry very
dilute and so use solution volumes greater than minimal.

So it might be thought there are two minimal limits;
a minimal solution volume, and a minimal amount of
chemistry. Dan