H2O + 0.0072 mM   CO2
+ 0.0015 mM   H2S
+ atmospheric CO2   (pCO2 = 3.408)

pH = 5.61

  (at 25 °C)
Electrical conductivity:   1.0 µS/cm   (info)
Ionic strength:   0.002 mmol/L   (info)
Alkalinity:   -0.0 meq/L   (info)
Total hardness:   0.0 meq/L   (info)
Carbonate hardness:   0.0 meq/L   (info)
Redox potential (Eh):   -129 mV  



Elements   (in mM)

C(4) DIC 1.57e-02
S S 1.50e-03
S(6) Sulfate 1.31e-05
S(4) Sulfite 1.86e-14
S(-2) Sulfide 1.49e-03
C(-4) Methane 1.31e-05

Aqueous Species   (in mM)

H+ 2.49e-03
OH- 4.04e-06
CO2 1.33e-02
HCO3- 2.39e-03
CO3-2 4.54e-08
HSO4- 3.15e-09
SO4-2 1.31e-05
H2S 1.42e-03
HS- 6.56e-05
S-2 3.21e-12
H2SO3 3.24e-18
HSO3- 1.81e-14
SO3-2 4.95e-16
CH4 1.31e-05
H2 1.00e-07

Minerals   (Ksp values)

Mineral Formula SI Saturation state
Sulfur S -3.83 under-saturated

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