[quote=John Jarosz;376974]
Quote Originally Posted by Photo Engineer View Post
The best is a sulfuric acid / dichromate solution in which you soak the film. /QUOTE]

Can you elaborate on the acid strength/dichromat concentration?

Thanks

john
A concentrated solution of lye or sodium hydroxide (about 10%) will do the trick. No need to mess with sulfuric or dichromate. It may take a bit of soaking. But unless there is something special about the glass I would toss it and start fresh - a more effiient use of your time and money.