Ammonium Ferric Oxalate
Ammonium Ferric Oxalate also known as Ammonium Iron Oxalate or Ferric Ammonium Oxalate
Used in Platinum printing, Palladium printing, Cyanotype printing, Iron-toning solutions and Ferric Oxalte processes
It is light-sensitive, keep tightly closed in light-resistant containers it will have a very long shelf life.
In 100, 200g & 500g packs