Const
ppm CaCO₃ per German degree of hardness: 10 mg/L CaO per °dH, and CaO → CaCO₃ scales by 100.086 / 56.077 = 1.7848.
CaO → CaCO₃
100.086 / 56.077 = 1.7848
ppm CaCO₃ per German degree of hardness: 10 mg/L CaO per °dH, and
CaO → CaCO₃scales by100.086 / 56.077 = 1.7848.