Quote Originally Posted by Tom Hoskinson View Post
I've never used an acid stop with 510-Pyro, just a plain water rinse. I can understand someone wanting to use an acid stop when using high strength dilutions of 510 that require short developing times

PF recommends a water rinse instead of an acid stop bath with TF-4

See: http://www.photoformulary.com/uploads/03-0141.pdf

However, you should be ok using an acid stop bath after the 510-Pyro if you follow the stop bath with a water rinse.

Clear Fix has sufficient pH buffering that you can go from 510 into an acid stop and then into the Clear Fix. IMHO, it's still a good idea to use a plain water rinse after the stop bath.
Since I'll be using the 510-Pyro at somewhere between 1:300 and 1:500 dilution, the water rinse should be fine. And since it's recommended for TF-4, it's what I'll do. Thanks. I'm about to order some FP4+ and get going on some testing with it.

I just happen to have a TON of KISB that I don't know what to do with...