772.5 PSU = 768,733.2 ppm
| PSU | ppm |
|---|---|
| 757.5 PSU | 753,806.3 |
| 762.5 PSU | 758,782 |
| 767.5 PSU | 763,757.6 |
| 772.5 PSU | 768,733.2 |
| 777.5 PSU | 773,708.8 |
| 782.5 PSU | 778,684.4 |
| 787.5 PSU | 783,660.1 |
772.5 PSU = 768,733.2 ppm
1 g/kg ≈ 1.0049 PSU · 1 mg/L ≈ 0.001 PSU · 1 ppm ≈ 0.001 PSU (dilute aqueous approximation)