Response to Formula for alkaline fixer

With regard to John's question about solvency effects of sodium chloride. Yes, sodium chloride is a silver solvent and is used in a few developers for this purpose. However, I don't believe its going to affect anything when preseent in the fixer. That's because by the time film has reached the fixer, image bearing silver halide has been converted to silver. The remaining unexposed silver halides are to be removed i.e., fixed. I'm pretty sure sodium chloride does not influence the silver image. Now, of course, the use in a developer is a differeent ballgame altogether since the sodium chloride can dissolve image beearing silver halide beforee they can be acted on and reduced to silver. Good luck. Cheers, DJ.

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