Re: hp and pot di with pt/pd

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From: Bill Collins (photo@intrex.net)
Date: 04/09/03-10:49:00 AM Z

I thought hydrogen peroxide also increased contrast. I'd like to see a negative that required a contrast decrease for pt/pd.

Bill

---------- Original Message ----------------------------------
From: "Christina Z. Anderson" <zphoto@montana.net>
Reply-To: alt-photo-process-l@sask.usask.ca
Date: Fri, 09 May 2003 08:51:44 -0600

>Good morning!
> Does anyone use either hydrogen peroxide or potassium dichromate added
>to the developer or hp added to the sensitizer (the latter not for
>palladium)?
> Correct me if I am wrong here: added to the developer, dichromate will
>increase contrast? And hp will decrease contrast? Why does this happen?
>Chris
>
>
>

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