Re: Clearing Problem with Platine

Beakman (beakman@netcom.com)
Sun, 6 Oct 1996 07:06:09 -0700 (PDT)

Terry writes:
>
> Stephen said:
>
> > I used sodium dichromate in potassium
> >oxalate as a developer and for contrast control. I therefore did not use
> any of the #2 potassium chlorate .
>
> Could I suggest leaving out the sodium dichromate and potassium chlorate
> generally.
>
> I am led to believe that di rather than tri sodium is the right EDTA to use.
>
> I do not use Platine paper. Could the paper be a factor itself ?
>
> Terry King
>

If your car engine is giving you trouble, do you just "leave it out"? If
Stephen needs the extra contrast he must get it from somewhere (and yes,
I realize there are internegative options).

Anyway, I use Platine. It is true that this is a notoriously tenacious
paper when it comes to clearing. I have generally used sodium dichromate
in my potassium oxalate as my contrast agent. I clear in Hypoclear (4.25
oz. powder in 1 U.S. Gallon). I have never had the sort of trouble which
Stephen describes. Stephen, have you tried using distilled water for the
*whole* process?

David