AW: AW: Ammonium iron III citrate BROWN

Ammonium iron III citrate 20 g / 100 ml distilled water
Potassiumferricyanide 8 g / 100 ml distilled water

mixing of equal parts of both, stored in a brown bottle.

according to Worobiec / Spence, Monochrome

Hans

  -----Ursprüngliche Nachricht-----
  Von: jacques verschuren [mailto:info@jacquesverschuren.nl]
  Gesendet: Donnerstag, 2. März 2006 18:40
  An: alt-photo-process-l@sask.usask.ca
  Betreff: Re: AW: Ammonium iron III citrate BROWN

  Leaves the question of mixing quantities.

  Jacques

    I am working with the brown type with very good results. I have heard that the brown type is less ligth sensitive thean the green but I never compared it.

    Hans
      -----Ursprüngliche Nachricht-----
      Von: jacques verschuren [mailto:info@jacquesverschuren.nl]
      Gesendet: Donnerstag, 2. März 2006 17:09
      An: alt-photo-process-l@sask.usask.ca
      Betreff: Ammonium iron III citrate BROWN

      I am presently taking up printing cyanotypes (again) and I ordered some Ammonium iron III citrate, which was delivered in the BROWN variety. It is hard to find some information on this variety, but my main question at this stage is:

      To make sensitizing solution A (in the green variety) 25 g is needed to make up to 100 cc of solution A. Would one need the same quantity for the brown variety solution??

Jacques Verschuren

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