Ammoniun vs. Potassium Dichromates

FotoDave (FotoDave@aol.com)
Sat, 17 Jan 1998 17:52:24 -0500 (EST)

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Does anyone have any relative speed comparison between this 2 dichromates. I
expose my gum prints with pot. for about 20 mins. I am wondering about how
much it can be faster with ammonium. Just a rough estimate would be fine.
Thanks a lot!

Dave

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