Devided Developers

Discussion in 'B&W: Film, Paper, Chemistry' started by mrred, Mar 14, 2014.

  1. mrred

    mrred Subscriber

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    What PH do I need to keep the A bath to stop metol or phenidone from activity with or without ascorbic acid?
     
  2. Gerald C Koch

    Gerald C Koch Member

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    A pH of 5.5 to 6.0 should be alright.
     
  3. mrred

    mrred Subscriber

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    If I am using metol and sodium metabisulphite or sodium bisulphite to lower the ph, would I still need some sodium sulphite as a preservative?
     
  4. Rudeofus

    Rudeofus Subscriber

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    No.
     
  5. mrred

    mrred Subscriber

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    Thanks for the replies folks, short and sweet like I like them!