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Argyrotype
So where can one purchase Ammonium Iron Citrate in the US? I looked through
the catalogs of Formulary, Bryant Laboratories and Artcraft and don't find
it listed.
Sandy King
>I can speak from first-hand experience...if you make up your argyrotype
>sensitizer with Ammonium Ferric Oxalate, you'll be sorely disappointed.
>The formula calls for Ammonium Iron (III) Citrate (the green form). All
>the other Ware formulas call for Ammonium Ferric Oxalate (New Cyanotype,
>Ware/Malde POP Pt/Pd, and Chrysotype). I was so conditioned to using
>Ammonium Ferric Oxalate in the Ware formulas that I couldn't figure out
>why my argyrotype sensitizer wasn't working properly. It wasn't until I
>re-read the formula that I discovered my mistake.
>
>Best,
>Dan Donovan