H2O + 33.5 mM   NaH2PO4
+ 6.5 mM   Na2HPO4
+ 0.001 mM   (NH4)2SO4

pH = 6.21

  (at 25 °C)
Electrical conductivity:   2510.1 µS/cm   (info)
Ionic strength:   52.513 mmol/L   (info)
Alkalinity:   6.5 meq/L   (info)
Total hardness:   0.0 meq/L   (info)
Carbonate hardness:   6.5 meq/L   (info)
Redox potential (Eh):   661 mV  



Elements   (in mM)

Na Na 4.65e+01
S S 1.00e-03
S(6) Sulfate 1.00e-03
Amm Ammonium 2.00e-03
P P 4.00e+01
O(0) O(0) 5.44e-14

Aqueous Species   (in mM)

H+ 7.19e-04
OH- 2.02e-05
NaOH 1.10e-07
Na+ 4.63e+01
NaSO4- 9.49e-05
NaHPO4- 2.47e-01
NH4+ 2.00e-03
NH3 1.52e-06
NH4SO4- 1.06e-08
HSO4- 3.00e-08
SO4-2 9.05e-04
H3PO4 2.32e-03
H2PO4- 3.35e+01
HPO4-2 6.26e+00
PO4-3 1.29e-05
O2 2.72e-14

Minerals   (Ksp values)

Mineral Formula SI Saturation state
Thenardite Na2SO4 -8.87 under-saturated
Mirabilite Na2SO4:10H2O -8.08 under-saturated
Na3PO4(cr) Na3PO4 -16.92 under-saturated
Sulfur S -87.28 under-saturated
NaMetal Na -58.44 under-saturated

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