From: Sandy King (sanking@clemson.edu)
Date: 11/09/01-03:31:30 PM Z
Judy Seigel wrote:
>
>I gave it up purely because it made me uncomfortable, probably habit and
>mental block, no problems that I noticed. After all, if we mix 200 cc of
>sensitizer (my usual) at a time, it ages as we use it, sometimes over many
>months -- that changes sensitivity too.
Actually not, at least not if you mix the dichromate with distilled
water. Mixed with distilled water a dichromate solution will give
identical sensitivity and contrast over a period of several years.
If the dichromate is mixed with tap water all bets are off.
Sandy
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