These round Troester's published per-product measurements to a class. They're
a starting point, and a malt with measured data overrides them through
FermentablePhProperties. Crystal is a function of colour (see
crystalMaltPhDefaults) because a 10 °L caramel malt and a 150 °L
Special B behave very differently in a titration.
Calibration: two common rules of thumb fall out of this table, and the tests
assert both. We care more about these than about any single decimal place.
1 % acidulated malt in the grist lowers mash pH by about 0.1. Here,
3 % lactic × 10 g/kg = 0.3 g/kg = 3.33 mmol/kg → 3.24 mEq/kg at pH 5.4,
over 41 mEq/(kg·pH) → 0.079 pH.
A millilitre of 88 % lactic acid per kilogram of grist moves pH about
0.28. Here, 11.48 mEq / 41 mEq per pH = 0.28 pH.
Class defaults for the malt titration curve.
These round Troester's published per-product measurements to a class. They're a starting point, and a malt with measured data overrides them through FermentablePhProperties. Crystal is a function of colour (see crystalMaltPhDefaults) because a 10 °L caramel malt and a 150 °L Special B behave very differently in a titration.
Calibration: two common rules of thumb fall out of this table, and the tests assert both. We care more about these than about any single decimal place.