F5

Kodak tropical acid hardening fixing bath for films and plates. IngredientQuantity Sodium thiosulphate anhydrous150 grams Sodium sulfite anhydrous 15grams Acetic acid glacial 17 mililiters Boric acid crystals7.5grams Potassium double sulfate of aluminium15grams Water...

F16

Chrome alum hardening fixing bath recommended for hot weather processing. Also known as Ansco 202. IngredientQuantity Solution A Sodium thiosulphate320 grams Sodium sulfite anhydrous 20grams Water to make 1 liter Solution B Chromium potassium sulphate60grams Sulphuric...