[pure-silver] Re: ARISTA-EDU Ultra 100iso
- From: richard lahrson <gtripspud@xxxxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Thu, 22 Dec 2011 14:48:25 -0800
i checked anchell's darkroom cookbook, it lists potassium alum, quite
different from potassium chrome alum....could be an error. rich
On Dec 22, 2011 2:28 PM, "Jean-David Beyer" <jeandavid8@xxxxxxxxxxx> wrote:
richard lahrson wrote:
> sb4 is a sodiun sukfate stop bath with potassium alum. i no longer use a
> ...
No. It uses Potassium Chrome Alum, which is why it is hardening.
An earlier poster remarked "The only problem with the Efke is that it
has a REALLY soft emulsion. You have to use a hardening fixer and treat
it very carefully when wet."...
Since it is already wet when it comes out of the developer, I thought
this stuff might help.
My grandmother, or grandfather, just used precipitated chalk as tooth
powder. Tooth powder was in common use until a little after WW-II. Some
people use Sodium Bicarbonate alone or as one of many ingredients in
their teeth cleaning efforts.
>
>> On Dec 22, 2011 8:04 AM, "Jean-David Beyer" <jeandavid8@xxxxxxxxxxx
>> <mailto:jeandavid8@xxxxxxxxxxx>> wrote:
>>
>> Tim Daneliuk wrote:
>> > On 12/21/2011 07:55 PM, Bo...
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