From: Katharine Thayer (kthayer@pacifier.com)
Date: 07/04/03-05:47:15 AM Z
Christina Z. Anderson wrote:
>
> Anyone know the pH of the three dichromates?
> Chris
Not exactly, but here's an excerpt from Kosar (in case you haven't dug
yours up yet) on the subject: (p. 52)
"Another possible reason for the general assumption that ammonium
dichromate gives the greatest printing speed is that fact that layers
containing the ammonium salt have a lower pH than layers prepared with
potassium or sodium dichromate. The pH of the ammonium dichromate
solution is about 4.5."
This archive was generated by hypermail 2.1.5 : 08/07/03-03:34:49 PM Z CST