Re: white precipitate on pt/pd prints

Tox Gunn (tox@remarque.berkeley.edu)
Thu, 19 Sep 96 10:51:23 PDT

If I had to venture a guess, I'd suggest that the oxalate may be
precipitating w/ some of the trace metals in your water. It's been a while
since I was doing qual. chem, but I seem to recall that oxalates of Most
metals are damn near inert.

Maybe doing a couple of soaks w/ distilled water to leach most of the oxalate
out before proceeding? 3-5 water changes should get most of i out of the
paper. Using known good water for the developer strikes me as a must.

If you are spending so much money of the Pt paper, I suspect the extra buck
per print for the DI would be cheap insurance...
Just a thought,
Tox
PS: Good luck! Let me know how it turns out (I'm just returning to photo
after a hiatus, and am curious about some of the alt approaches).

***********************************************
* Tox Gunn .......tox@remarque.berkeley.edu *
* "Your sanity is not my responsibility!" *
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