Ammonium Carbonate bath for lith printing

Discussion in 'B&W: Film, Paper, Chemistry' started by Tom Kershaw, Jul 23, 2009.

  1. Tom Kershaw

    Tom Kershaw Subscriber

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    Taking inspiration from the Moersch lith additive Ω which appears to be an Ammonium Carbonate solution, I mixed up a 10% solution of Ammonium Carbonate adding 10ml to 990ml water for use as a second bath before the stop bath. Due to the unpredictable nature of lith printing, I cannot be immediately sure of the effect of this second bath. After re-reading the Moersch instruction sheet for the omega additive, I noticed attention is paid to the strong smell of the solution and the provision of a dropper, to alleviate the need to open the bottle. My 10% solution produces no such strong smell, so perhaps the Moersch solution is a much higher concentration.

    Any experiences of using an Ammonium Carbonate second bath?

    Tom.
     
  2. dancqu

    dancqu Member

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    So, 1:999, one gram in one liter.
    Any aroma what so ever? Dan
     
  3. Tom Kershaw

    Tom Kershaw Subscriber

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    No, but difficult to tell for certain.