sprint systems of photography makes developer, stop, fix and fix remover ( and other stuff ) for both film and paper. they call their chemistry a system because
when the stop bath indicates it indicates when EVERYTHING is spent ... their fixer is high capacity "speed fixer" ... you may write or call them
to see if using their stop+fix instead of all 4 if you like using other chemistry? to see if the stop will still indicate for the fixer. it might make your life easier
because you don't have to deal with tests which may be useful, confusing or a PITA ....
not saying not to use the formulary-stuff but i used it years ago and it had a scent i couldn't get used to, so i went back to using sprint fixer.
its a liquid concentrate, lasts and lasts and doesn't reek ... some of their chemicals smell like vanilla too ..