[pure-silver] Re: Silverholes... was Pinholes in Lith
- From: "J. Stewart" <jrstewart@xxxxxxxxxxxx>
- To: <pure-silver@xxxxxxxxxxxxx>
- Date: Wed, 13 Oct 2004 19:59:17 -0400
JB, I'm using water stop, not acid stop.
I'm using Formulary TF4 diluted 1:3 with distilled water.
That surprises me that TF4 might be so weakly alkaline.. that's almost
neutral.
JIm
----- Original Message -----
From: "John Black" <jblack@xxxxxxxxx>
To: <pure-silver@xxxxxxxxxxxxx>
Sent: Wednesday, October 13, 2004 4:41 PM
Subject: [pure-silver] Re: Silverholes... was Pinholes in Lith
>
> After water
>> rinse, I turned on the inspection lite and viewed the lite directly thru
> the
>> film... no evidence of "holes, spots, or lines". Within a minute of
> fixing
>> in TF4 (alkaline fix), that same film had very obvious spots and lines.
>>
>> I'm wondering if alkaline fixer might be the problem, not the alkalinity
> of
>> the developer. Most developers are around 8- 8.5; I think alk fixers are
>> higher pH.
>
>
> I don't have my A&T here right now but most of the alk fixes I have used
> and
> seen are very weakly alkaline, in the neighborhood of 7.0-7.4.
>
> Your observation shows that something is happening in the fix though. Are
> you water rinsing or acid stopping before fixation?
>
> JB
>
>
>
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