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 ).
• His assistant watched Baer as he stared at a subject tree muttering,'I am looking at the Pyro in the tree trunks [ " for the negative " ] and the Amidol [ " for the print " ] in the leaves '.