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wiki:darkroom:chemistry:formulas:fixers

Fixers

This page collects the formulas for a few different (simple) fixers.

Preparations

Hypo, plain
For use as a second fix prior to toning, etc.

Water (52°C) 2000 ml
Sodiumthiosulfate 480 gr

Will fix a print within 30 sec. Solution has a short shelf-life and should be used directly. An acidic stop must be used before fixing, otherwise staining might occur.

Hypo, acidic
For use as a second fix prior to toning, etc.

Water (52°C) 2000 ml
Sodiumthiosulfate 480 gr
Sodiumbisulfite 45 gr

Use undiluted. This formula can be stored and re-used.

Kodak F-24, acidic fix
Non-hardening fix. Acidic.

Water (52°C) 500 ml
Sodiumthiosulfate 240 gr
Sodiumsulfite 10 gr
Sodiumbisulfite 25 gr
or
Citric acid 22 gr
Water to make, 1000 ml

Film: Use undiluted. Should clear a film in 5 min. Film fully fixed within 10 min.
Print: Fix in two consecutive baths for 5 min each. If fixing prints prior to toning, second bath should instead be a plain hypo.

Instructions for use

Here is a general description on how to proceed

  1. Step 1
  2. Then do this
  3. And then this

Notes

This is the place to write down notes, tips etc.

wiki/darkroom/chemistry/formulas/fixers.txt · Last modified: 2022/01/26 11:02 by henpe

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