H2O + 0.4996 mM   CaCO3
+ 0.4984 mM   MgSO4
+ 0.1711 mM   NaCl
+ atmospheric CO2   (pCO2 = 3.408)

pH = 8.18

  (at 25 °C)
Electrical conductivity:   221.7 µS/cm   (info)
Ionic strength:   3.418 mmol/L   (info)
Alkalinity:   0.999 meq/L   (info)
Total hardness:   1.996 meq/L   (info)
Carbonate hardness:   0.999 meq/L   (info)
Redox potential (Eh):   544 mV  

(NOTE: No   preselected minerals   precipitate.)


Elements   (in mM)

C(4) DIC 9.96e-01
Ca Ca 5.00e-01
Mg Mg 4.98e-01
Na Na 1.71e-01
S S 4.98e-01
S(6) Sulfate 4.98e-01
Cl Cl 1.71e-01
O(0) O(0) 5.58e-14

Aqueous Species   (in mM)

H+ 6.96e-06
OH- 1.63e-03
CO2 1.33e-02
HCO3- 9.60e-01
CO3-2 8.27e-03
Ca+2 4.66e-01
CaSO4 2.50e-02
CaCO3 3.92e-03
CaHSO4+ 1.03e-09
CaHCO3+ 4.44e-03
CaOH+ 9.77e-06
Mg+2 4.63e-01
MgOH+ 2.13e-04
MgCO3 2.22e-03
MgHCO3+ 4.07e-03
MgSO4 2.92e-02
NaOH 4.35e-08
Na+ 1.71e-01
NaHCO3 8.12e-05
NaCO3- 2.05e-05
NaSO4- 2.95e-04
Cl- 1.71e-01
HSO4- 2.35e-07
SO4-2 4.44e-01
O2 2.79e-14

Minerals   (Ksp values)

Mineral Formula SI Saturation state
Calcite CaCO3 -0.15 under-saturated
Gypsum CaSO4:2H2O -2.32 under-saturated
Portlandite Ca(OH)2 -9.87 under-saturated
Brucite Mg(OH)2 -3.92 under-saturated
Halite NaCl -9.17 under-saturated
Thenardite Na2SO4 -10.69 under-saturated
Mirabilite Na2SO4:10H2O -9.90 under-saturated
Nahcolite NaHCO3 -6.29 under-saturated
Trona NaHCO3:Na2CO3:2H2O -18.83 under-saturated
Natron Na2CO3:10H2O -11.47 under-saturated
Thermonatrite Na2CO3:H2O -12.91 under-saturated
Aragonite CaCO3 -0.29 under-saturated
Vaterite CaCO3 -0.72 under-saturated
CaCO3(a) CaCO3 -2.23 under-saturated
Ikaite CaCO3:6H2O -2.01 under-saturated
Anhydrite CaSO4 -2.54 under-saturated
Dolomite CaMg(CO3)2 -0.17 under-saturated
Magnesite MgCO3 -0.60 under-saturated
Glauberite Na2Ca(SO4)2 -12.48 under-saturated
Hydrophilite CaCl2 -22.77 under-saturated
Bischofite MgCl2:6H2O -15.42 under-saturated
Epsomite MgSO4:7H2O -4.76 under-saturated
Antarcticite CaCl2:6H2O -15.12 under-saturated
Sulfur S -88.31 under-saturated
MgMetal Mg -101.32 under-saturated
NaMetal Na -58.84 under-saturated

Disclaimer:   The pH calculator has been tested with great care. Nevertheless, the results are provided without warranty.