amidol การใช้

As amidol ages it changes color to a dark red-brown.
Developing dishes and equipment used to prepare amidol solutions are also frequently stained brown, a stain that is very persistent.
Eventually he was able to get most of the same qualities he preferred with Kodak's Azo glossy silver gelatin paper developed in Amidol.
"' Amidol "'is a colorless crystalline compound with the molecular structure C 6 H 3 ( NH 2 ) 2 OH . It is a salt and is used as a photographic developer.
In the early days of photography, a wide range of developing agents were used, including chlorohydroquinone, ferrous oxalate, : 131 hydroxylamine, ferrous lactate, ferrous citrate, Eikonogen, atchecin, antipyrin, acetanilid and Amidol ( which unusually required mildly acidic conditions ).