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Fw: Potassium Chlorate - effect on Pt/Pd
Carl, Jeffrey and all,
I thought I sent the following to the list, but it looks like only Carl
received it. In any case, yes it's Pot. Chlorate. Also Carl, the Negs are
Lightjet 5000 and nearly continuous tone - unlike an imagesetter.
Carl and all
I recently purchased the Pot. Chlorate (10mg) from B&S and I went over my
notes about the prep. I even took the balance of the 10mg and weighed it
for what I thought it should be and it was as expected, 9.1mg.
The stock solution I prepared was 4% (22ml of distilled water with .9mg
PC).
I just checked the bottle for anything unusual and it was perfectly clear.
???
The sensitiser I prepared contained no PT.
Nick
From: Carl Weese <cweese@earthlink.net>
> Nick,
>
> A drop of 2% pot. chlor. in a 32 drop Pt/Pd coating should make a
> significant, clearly visible contrast increase. In fact a drop of 1%
> should make an obvious difference. I can only guess that there's
> something wrong with the batch of chlorate you are using.---Carl