A pre-mixed Ferrous Sulfate developer for Ambrotypes and Tintypes. Dilute 1:3 as a positive developer or 1:5 for negative development. Reformulated for universal development in hot or cold weather.
Our concentrated Ferrous Sulfate developer is diluted 1:3 at 45 seconds for positive plate (tintype and ambrotype) development. Dilute 1 part stock solution to 5 parts water and develop for 90-120 seconds for glass plate negative development. Reformulated for universal development in hot or cold weather.
SKU1078