351.5 g/kg = 353.222 PSU
| g/kg | PSU |
|---|---|
| 336.5 g/kg | 338.149 |
| 341.5 g/kg | 343.173 |
| 346.5 g/kg | 348.198 |
| 351.5 | 353.222 |
| 356.5 g/kg | 358.247 |
| 361.5 g/kg | 363.271 |
| 366.5 g/kg | 368.296 |
351.5 g/kg = 353.222 PSU
1 g/kg ≈ 1.0049 PSU · 1 mg/L ≈ 0.001 PSU · 1 ppm ≈ 0.001 PSU (dilute aqueous approximation)