The kettle's buffering at a measured pre-boil volume, in mEq per pH unit.
perLitre × preBoilVolumeL, with the per-litre figure and its assumption in
kettleBufferingPerLitreMEqPerPh. It's linear in the volume so the
recipe calculation can publish one per-litre number, and on brew day it can
be scaled by whatever volume the sight glass shows.
The kettle's buffering at a measured pre-boil volume, in mEq per pH unit.
perLitre × preBoilVolumeL, with the per-litre figure and its assumption in kettleBufferingPerLitreMEqPerPh. It's linear in the volume so the recipe calculation can publish one per-litre number, and on brew day it can be scaled by whatever volume the sight glass shows.