718.5 g/kg = 722.021 PSU
| g/kg | PSU |
|---|---|
| 703.5 g/kg | 706.947 |
| 708.5 g/kg | 711.972 |
| 713.5 g/kg | 716.996 |
| 718.5 | 722.021 |
| 723.5 g/kg | 727.045 |
| 728.5 g/kg | 732.07 |
| 733.5 g/kg | 737.094 |
718.5 g/kg = 722.021 PSU
1 g/kg ≈ 1.0049 PSU · 1 mg/L ≈ 0.001 PSU · 1 ppm ≈ 0.001 PSU (dilute aqueous approximation)