> Something I didn't mention in my previous post was that one can make a 54%
> (and probably higher) ferric oxalate solution from powder. To do this put
> 54 gm of powder ferric oxalate in a beaker add water to make 100 ml. Now
> slowly heat and add small quantities of EDTA tetra sodium until it is
> dissolved. This can be done on a hotplate or by zapping in a microwave.
Dick, I think that I would measure the Sp Gr of that claim first. I ran
three seperate test, each from a different batch of your powder and the
highest Sp Gr was 1.14, a 22% solution.
>
> I've not fully tested what a superstrength F.O will do for you. I made a
> double strength sodium palladium solution and used the double strength F.O.
> years ago and got a normal looking print. I thought that all I was doing
> was wasting precious metal.
>
Did your test show any change in speed, contrast, or dMax? and did you run
any test at something less than double strength? say 75%?
>
> Dick Sullivan
> Bostick & Sullivan
> PO Box 16639, Santa Fe
> NM 87506
> 505-474-0890 FAX 505-474-2857
> http://www.bostick-sullivan.com
>
>
EJ Neilsen
ejnasn@laplaza.org