I had 4 rolls processed when I posted this. Luckily my chemicals are still good but I will need to get more to finish all these. Is fixed reusable,I reuse hypo and photo flo but I have not been saving fixer.
Not in the same direction; I develop the rolls quickly and then let them sit for years.
Have negatives that are over 7 years old, never been printed.
Yes fix is reusable.
I pour the fix in the beaker I'll be using and then dunk and stir in an inch or two of leader from the film I'll be developing and see how long it takes to clear. Use at least double that time.
With fixer it is worth checking the amount of silver in it. It will eventually exhaust and cease to clear the undeveloped and fix the rest. You can buy test kits to do this. Fixer makers will also give recommendations in their literature.
For what it is worth a 250ml bottle of 1+4 fixer will do about 5-6 135 films before the test suggests dumping it but it is probably safer to stop at 4 films.
Others might suggest dumping much sooner on the " fixer is cheap, why save it and take any risk" basis but I rely on the test with a safety margin which give me 4 135 films
Same for 120 except that the bottles are bigger
i would mix fresh fixer and do a clip test.
find out how long it takes to clear a piece of film in room light
and do the same thing for your old fixer ... if it takes 2x the first test ( unused fix )
it is no good ... you can use your old fix for your first bath and use fresh fix to "clean up"
its not worth using spent old fixer to process film unless you know how spent it actually is ...
good luck processing all your film !
when i returned from visiting family overseas
i had about 30 or 40 assorted rolls of film ( 35mm, 120, color, chrome bw )
and a bunch of 4x5 sheet film too ... ( 30 sheets ? )
it goes quick once you dig in :)
just make sure you have room to hang / dry it !
Not sure where you get those figures from. A litre of Hypam or Ilford Rapid Fixer at 1+4 is fine for 24 rolls of 35mm or 120 film. Films and RC papers can tolerate far higher levels of silver than fibre based papers without affecting archival permanence.