309.5 g/kg = 311.017 PSU
| g/kg | PSU |
|---|---|
| 294.5 g/kg | 295.943 |
| 299.5 g/kg | 300.968 |
| 304.5 g/kg | 305.992 |
| 309.5 | 311.017 |
| 314.5 g/kg | 316.041 |
| 319.5 g/kg | 321.066 |
| 324.5 g/kg | 326.09 |
309.5 g/kg = 311.017 PSU
1 g/kg ≈ 1.0049 PSU · 1 mg/L ≈ 0.001 PSU · 1 ppm ≈ 0.001 PSU (dilute aqueous approximation)