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Thread: TF-3 fixer

  1. #21
    Helen B's Avatar
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    As I understand it, the practice of adding ammonium chloride to sodium thiosulphate in solution goes back to the days before ammonium thiosulphate was commercially available at adequate purity. Pre WW2?

    Best,
    Helen

  2. #22

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    Quote Originally Posted by Helen B
    As I understand it, the practice of adding ammonium chloride to sodium thiosulphate in solution goes back to the days before ammonium thiosulphate was commercially available at adequate purity. Pre WW2?

    Best,
    Helen
    Thanks for the additional info, Helen. Do you know if there's any advantages & disadvantages between these two types of rapid fixers?

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