Re: reply to Re: pop fixer

JPORTALE@pimacc.pima.edu
Wed, 09 Aug 1995 10:13:41 -0700

>>It may help to know some more information. Like, what type of POP are you
>>using? How long are you leaving them in the fix for? Is the fix full
>>strength or are you diluting it with water? Have you run a "silver out" test
>>(I know that's not the real name) on the paper to see how long ot takes to
>>fix?
>>Joe P.
>

>Im using the Chicago Albumen works pop. ive been using 10% and 5% sodium
>sulphate fix (not regular buy in the store kodak type) like everyone tells
>me to. i have no idea what a "silver out" test is. if anyone has any
>ideas, im eager to listen.
> kate
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

Kate,

I would try the Kodak fixer. The "silver out" test is fix unexposed or
exposed test strips for light grey (Zone VI or VII) for various amounts of
time. After you wash and dry these test strips, exposed the test strips to a
bright light source for a few minutes. The incompletely fixed test strips
will darken after several minutes. You want to find the least amount of time
it takes to produce no change in the paper tone. This is a pretty gross test
and should only used with POP papers. There is another test for fixing that
involves a silver nitrate solution that I just can't remember. A little time
in the library will probably turn up this test.

I hope this helps,

Joe P.