ph a measure of exhaustion???

[johnielvis]

they also wash out with hca and extended washing, but as you alredy said. they don't do any harm anyway.ignore them.

actually, I've found that the crap that I can take off ... (not boiling...like 100 degree--processing hot temp...--completeley savfe and film is designed for it)....ANYWAY...I used to put it in and get the colored fix, but there' sother stuff that gets in there and makes like a slime on the bottom of the fix jar

whatever...I got rid of the slime and my fix is nice and pure and not contaminated...you wanna not presoak junk film go ahead...it's just less crap that gets in the fix---less crap equals longer life.

boy...all the people that never tried it say it's dangerous....I do it and it solved my extra fixer deposits problem..never a problem with emullsion sliding of never a problem with anything except an extra couple of minutes...which I let it soak in the jar of "hot" water while I set other stuff up

but whatever...you all certainly sound like you know better......

[Bill Burk]

To the original question, Ralph, I couldn't find specific recommendations for pH upper- and lower- control limits. Just Todd-Zakia included example control charts that tracked sensitometry and pH over time. They explained that the sensitometry would give you the heads-up that "something" was wrong. And the pH might lead you to the root cause.