Many print processors, both labs and photographers, tell us that they find that our Clayton P90 Print Developer is very good for art and landscape shots and our Clayton Ultra Cold Tone Print Developer is fantastic for head shots.

I have for years, told our customers that they did not need a stop bath if the were using our fixers because they are stop- fixes. I also have recommended for years, not using hardener.

"Its not that I believe scientists to be always correct; but non-scientists to be wrong."

Isaac Azinoff

How does it harm fixer? What is the chemical reaction that harms fixer?

Developer carry over does not cause fixer to deteriorate. The purpose of stop bath is to stop development. Modern fixing formulas are buffered against pH change. That being said, acid, neutral or alkaline pH of fixers has no scientificly measureable effect on fixing. It is thio sulfate the combines ...

Acetic acid Stop Bath has no chemical reaction with developer that will result in white specs. Aluminum dropping out of fixer hardener because it is improperly mixed, results in white specs.

Alkaline, neutral, or acid pH of fixer, other than processing time, maybe, and some personal preferences, there is no scientific data to support that one is better than the other. The biggest advantage of acid fixer is in machine processing. It is buffered against developer carry over and no stop ba...

Kieth: The "hard water" deposits you describe are another reason why we manufacturers have made our formulas with additional water sofeners. The ancient formulas that everyone seems to think are so fantastic, do not have the level of sophistication or advantages that the modern formulas ha...

What is the chemical reaction that not using stop bath causes white specs?

If you are using a hardener, STOP. White spects usually is the aluminum dropping out of solution.

I am disapointed in the poor performance of our F 76 Developer for you. With rare exception, we have many very satisfied users of our product. You did not identify which film you were using, but if it was Kodak 100 TMX film; the processing times are 50% longer than Tmax 100 as printed on the label. ...

Arista edu. (Hungary) is Forte Film, the ARISTA II is FOMA Film

Our Clayton F76plus Developer is a gamma 1 developer with very wide latitude and contrast control. If you would like a sample, contact me.
Lowlel Huff
askus@claytonchem.com

The CLAYTON ULTRA COLD TONE DEVELOPER will process between 100 -150 8X10 sheets per liter of working strength developer depending on if it is fiber or RC.

Why don't we use the chemicals, films and papers as the manufacturer recommends to use them? If you need better image quality, use a better developer. We have learned several things about the relationship between silver halide and how to make developers and fixers since the 1920s. It just so happens...