From: Sandy King (sanking@hubcap.clemson.edu)
Date: 04/23/00-09:47:10 AM Z
No. TF-4 is a commercial alkaline fixer available from Formulary,
formula not known to me. TF-3 is the formula as posted. It has a
higher alkalinity than TF-4.
Sandy King
>You write TF3, do you mean TF 4, the amonia based fixer?
>
>S. Shapiro
>----- Original Message -----
>From: Sandy King <sanking@hubcap.clemson.edu>
>To: <alt-photo-process-l@skyway.usask.ca>
>Sent: Sunday, April 23, 2000 6:31 AM
>Subject: Re: Non-acidic fixer for PMK
>
>
> > Don,
> >
> > With staining developers such as PMK, and the Pyrocatechin Pyrocat
> > formula made available in the last issue of Post Factory Photography,
> > you will get maximum image stain with alkaline fixers.
> >
> > In my working conditions Kodak Rapid-Fix has a pH of about 5.2
> > (ACIDIC), the TF-3 formula a pH of about 9.0 (ALKALINE). All other
> > things the same you will get more stain with the alkaline TF-3
> > formula than with Kodak Rapid-Fix.
> >
> > Sandy
> >
> >
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