790.5 PSU = 786,645.4 ppm
| PSU | ppm |
|---|---|
| 775.5 PSU | 771,718.6 |
| 780.5 PSU | 776,694.2 |
| 785.5 PSU | 781,669.8 |
| 790.5 PSU | 786,645.4 |
| 795.5 PSU | 791,621.1 |
| 800.5 PSU | 796,596.7 |
| 805.5 PSU | 801,572.3 |
790.5 PSU = 786,645.4 ppm
1 g/kg ≈ 1.0049 PSU · 1 mg/L ≈ 0.001 PSU · 1 ppm ≈ 0.001 PSU (dilute aqueous approximation)