Quote Originally Posted by gbenaim View Post
I should specify that the yellowish tone is not on the base, but on the silver itself, i.e. the actual dark tones. MAS's amidol formula calls for 2-3 ml of KBr 10%.
Sorry, you're correct I was refering to my notes using 500ml of developer and not 1L. However MAS amidol recommends 6ml 10% KBr/litre for enlarging paper. Although thinking about it I would be surprised if its the KBr causing the yellowish tone.