717.5 g/kg = 721.016 PSU
| g/kg | PSU |
|---|---|
| 702.5 g/kg | 705.942 |
| 707.5 g/kg | 710.967 |
| 712.5 g/kg | 715.991 |
| 717.5 | 721.016 |
| 722.5 g/kg | 726.04 |
| 727.5 g/kg | 731.065 |
| 732.5 g/kg | 736.089 |
717.5 g/kg = 721.016 PSU
1 g/kg ≈ 1.0049 PSU · 1 mg/L ≈ 0.001 PSU · 1 ppm ≈ 0.001 PSU (dilute aqueous approximation)