I didn't phrase the question correctly. Generally speaking, how do you use the Ilfochrome Replenishers with the exhausted chemistry: 20%, 50% of the total required volume? There are no instructions with the chemistry and trying to contact the Ilfochrome people seems to be a major undertaking.
Which Ilfochrome chemistry are you using? 2.5 liter tanks? is this one shot soup?
are you wanting to set up a replenishment system and wondering how much rep you need for dev,bleach and fix per meter square?
If its of any use I use Ilford P3X turbo and the replenishment rates are as so.
Developer is 300ml rep per square meter
Bleach is 200ml rep per square meter
and Fixer is 300ml per square meter.
The machine I use holds minimum 50L working solution at any one time with 20 liter of rep on hand for both Dev, bleach and fix.
A very important note on replenishing Ilfochrome in high volumes is that if you run a lot of ilfochromes with black (unexposed areas) you will find your machine will drift offline as it will be replenishing when no activity is occurring etc...
Its a delicate see saw judging exactly how to replenish which is why we run control strips daily. Please see link below for a sample of a control strip
(there was a url link here which no longer exists)