H2O + 30.5 mM   NaH2PO4
+ 19.5 mM   Na2HPO4
+ 300.0 mM   NaCl

pH = 6.43

    (at 25 °C)
Electrical conductivity:   33522.5  µS/cm   (info)
Ionic strength:   383.882  mmol/L   (info)
Alkalinity:   19.5  meq/L   (info)
Total hardness:   0.0  meq/L   (info)
Carbonate hardness:   19.5  meq/L   (info)
Redox potential (Eh):   690  mV  

Elements   (in mM)
Na Na 3.69e+02
Cl Cl 3.00e+02
P P 5.00e+01
O(0) O(0) 3.42e-11
Aqueous Species   (in mM)
H+ 4.79e-04
OH- 4.08e-05
NaOH 1.24e-06
Na+ 3.67e+02
NaHPO4- 2.56e+00
Cl- 3.00e+02
H3PO4 1.09e-03
H2PO4- 3.05e+01
HPO4-2 1.69e+01
PO4-3 1.52e-04
O2 1.71e-11
Minerals   (Ksp values)
Mineral Formula SI Saturation state
Halite NaCl -2.86 under-saturated
Na3PO4(cr) Na3PO4 -14.07 under-saturated
NaMetal Na -58.09 under-saturated

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