Calculation of water alkalinity

Insert the values of the water for CO32-, HCO3 and OH (in mg/l) (YELLOW CELLS).
You will automatically obtain the value of the alkalinity.(GREEN CELLS) :

 

Interpretation

CALCULATION OF THE ALKALINITY OF WATER
Element Unit Valor
CARBONATES, CO
32-
mg/l
CARBONATES, CO
32-
meq/l
BICARBONATES, HCO
3
mg/l
BICARBONATES, HCO
3
meq/l
HIDROXIDES, OH
mg/l
HIDROXIDES, OH- meq/l

ALKALINITY
Unit Value
meq/l
mg/l CaCO3
º German
º French
º English

REFERENCE
Rating Alc (mg/L CaCO3)
Very low < 12.3
Low 24.6 – 41
Medium 41 – 98.4
High 98.4 – 147.6
Very high > 147.6

Ew = Mw/Valence, Mw = Molecular weight, Ew = Equivalent weight
Element Mw Ew
CARBONATES, CO
32-
60 30
BICARBONATES, HCO
3
61 61
HIDRXIDES, OH
17 17
CALCIUM CARBONATE, CaCO3 100 50

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