Witho Worms & Jorien van Santen (verzet13@xs4all.nl)
Fri, 19 Nov 1999 20:50:01 +0100
At 13:58 19-11-1999 -0500, you wrote:
>Witho,
>
>You should check the pH of the solution, maybe itīs in the acidic range
>(lower pH7) and your Potassiumoxalate has a surplus of oxalic acid.
>This has a great influence to the solubility of the salt.
>I often had this problem when preparing my developer directly from Oxalic
>acid and Potassiumhydroxid - in this case you should rise the pH to 7 -
>best with a solution of Potassiumhydroxid.
>
>Regards
>Harald Leban
>from
>(snowy) Austria
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 ?
Regards,
Witho
>
>
>
>
>Nachricht geschrieben von INTERNET:alt-photo-process-l@skyway.usask.ca
>>Just a few hours ago I tried to dissolve 250 gram of potassiumoxalate in
>hot water to make 1 liter. But not all the oxalate dissolves. This is the
>first time I noticed and I doubt if this is normal. Is it ?<
>
>
>
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