Eric Neilsen (e.neilsen@worldnet.att.net)
Thu, 25 Nov 1999 10:22:18 -0600
Harald, Could you expand on your , in worst case for Sodium Hydroxide? Many
years back when I was using HCL as a clearing bath, had a small accident. I
poured an amount of HCL clearing bath into my PotOx developer. I did a quick
calculation and added NaOH in what I guessed to be an equal amount to the HCL
to get, H2O and NaCl. The developer worked afterwards, and produced very warm
images. I guessed that it was due to the extra NaCl in solution, as I had seen
that Palladium solutions with NaCl produced warm prints, and those with
excessive NaCl even warmer. Care to comment?
EJ Neilsen
Harald Leban wrote:
> You can also use other kinds of alkaline substances like Potassiumcarbonate
> (Potash), Ammonia solution or in worst case Sodiumhydroxide.
> To be on the safe side you should hold the pH on a level between 6,5 -7,0
> (reply to a message from K.Pollmeier)
>
> But the best is to do it with Potassiumhydroxide or -Carbonate.
>
> Regards
> Harald Leban
>
> Nachricht geschrieben von INTERNET:alt-photo-process-l@skyway.usask.ca
> >I checked the pH, it's 1 1/2 to 2. So I think you are right but I don't
> have potassiumhydroxid. Is there a save alternative or should I wait untill
> monday and get it from my supplier ?<
-- Eric J. Neilsen 4101 Commerce Street, Suite #9 Dallas, TX 75226 214-827-8301 http://home.att.net/~e.neilsen
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