Kodak Fixer exhausted

I would like to know how many rolls Tmax400 (24 exp) it takes to
exhaust 1 liter of Kodak Fixer solution?


k

k wrote:
>
> I would like to know how many rolls Tmax400 (24 exp) it takes to
> exhaust 1 liter of Kodak Fixer solution?

If it's Kodafix you are using, it will fix about 18 rolls of 24 per
liter.

"k" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed) om...
> I would like to know how many rolls Tmax400 (24 exp) it takes to
> exhaust 1 liter of Kodak Fixer solution?

This info is available on the Kodak web site.

James Robinson wrote:
>
> k wrote:
> >
> > I would like to know how many rolls Tmax400 (24 exp) it takes to
> > exhaust 1 liter of Kodak Fixer solution?
>
> If it's Kodafix you are using, it will fix about 18 rolls of 24 per
> liter.

I had one of those revelations while sleeping, when it hit me that I
didn't do the calculation right. Here's another attempt:

Kodafix has a capacity of about 100 sheets of 8X10 film per gallon of
working solution (1:3 dilution). Therefore, since 3 rolls of 24
exposure film are the equivalent of two 8X10 sheets, the fixer would
have a capacity of 150 rolls of 24 exposure per gallon. That works out
to about 40 rolls of 24 exposure film per liter.

Just a note:
I've been using Kodak Polymax fixer for films.
I went 'old' - lost its fixing capacity much earlier than it went
exausted - for instance, only 5 rolls/liter in about 2 months.

Since this happened twice, I stopped using it and now mix the old F-9
formula.

Jorge

(E-Mail Removed) (k) wrote in message news:<(E-Mail Removed). com>...
> I would like to know how many rolls Tmax400 (24 exp) it takes to
> exhaust 1 liter of Kodak Fixer solution?

"k" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed) om...
> I'm using the all purpose Kodak Fixer (powder). I've made
1 liter.
> How many rolls do you recommend to use before the fixer
got exhausted?.
There is no definite number because it depends on the
emulsion and actually, on how much of the silver has been
exposed and developed. The Kodak number is 100 8x10 sheets
per gallon, but it doesn't state if this is paper or film. I
think its for paper.
This is actually very optimistic for either if archival
fixing is desired. The fixing bath will leave some of the
silver halide in the form of insoluble complexes if the
fixer has too much silver dissolved in it. A good test is to
fix a scrap of undeveloped film. Soak the film in water for
a few minutes and then fix it in _fresh_ fixer until its
clear. Note the time it takes. Test the fixer periodically.
The old recommendation is to discard the fixer when the
clearing time doubles from that of a fresh bath. I think 1.5
times is probably closer.
To get the best fixer economy and insure complete fixing
use two successive baths. The first does most of the work,
the second stays fresh enough to finish off any complexes
left in the film.
Kodak has instructions for two bath fixing in its
publicaton _The Kodak Black-and-White Darkroom Dataguide_.
Films like T-Max and Tri-X are harder to fix than other
films and fixing baths have less capacity for them than for
most films.
--

---
Richard Knoppow
Los Angeles, CA, USA
(E-Mail Removed)

"> "k" <(E-Mail Removed)> wrote in message
> news:(E-Mail Removed) om...
> > I would like to know how many rolls Tmax400 (24 exp) it takes to
> > exhaust 1 liter of Kodak Fixer solution?
>
Kodak publishes exhaustion rates on their website. However, they may not be
applicable for Tmax films since Kodak recommends Rapid Fix for these films,
and specifies that they be fixed longer than conventional films. But check
out the Kodak info for more information.