How to replenish PE's Bleach and Fixer

Jemzyboz

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Hi everyone,

Been using Photoengineer's bleach and fixer (formulae attached) modified with some acetic acid to make them both pH 6.7

I was wondering what do you recommend for making a replenisher for both and how much do you recommend to replenish by?
 

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Rudeofus

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The bleach typically lasts forever. Every dozen rolls it may be advisable to add 10 g/l Ammonium Bromide and get pH back down below 7. Not sure how to replenish this specific C-41 fixer.

Konica posted a patent US6225018, in which formulas and procedures for replenished C-41 development are shown. The formulas in this patent use a different bleach and a much stronger fixer. You may not be able to find the ingredients for their bleach, but the fixer should be doable. This would give you a replenishable fixer process that's likely going to work.
 
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Jemzyboz

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Thanks, I'll look it up
 
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Jemzyboz

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Hi, I couldn't find his post
 

Rudeofus

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The posted it to the USPTO ...
 
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