Re: Ammoniun vs. Potassium Dichromates

Lawrence Shapiro (leshapiro@worldnet.att.net)
Sun, 18 Jan 1998 17:03:37 -0700

Dave,
I use a 30% solution of ammonium dichromate which is about as much of a
saturated solution as it can be. Times with my home build UV light box
which contain four 20 watt bulbs are in the range of 2-5 minutes
depending on the density. I have tried potassium in the past and found
it too slow.

Larry Shapiro