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Thread: quetion

  1. #1

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    quetion

    Can I add potassium alum to an alkaline film fixer I make up and essentially not change it's alkaline nature? I am trying to avoid scratching negatives. I do not use acid anything in my chemistry. Thanking you in advance.

  2. #2

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    If I recall correctly, potassium alum needs an acidic environment to work properly...

  3. #3
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    You cannot add Potassium Alum to an alkaline fix. It will form a white precipitate which will ruin the fixer in most cases.

    PE



 

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