319.5 g/kg = 321.066 PSU
| g/kg | PSU |
|---|---|
| 304.5 g/kg | 305.992 |
| 309.5 g/kg | 311.017 |
| 314.5 g/kg | 316.041 |
| 319.5 | 321.066 |
| 324.5 g/kg | 326.09 |
| 329.5 g/kg | 331.115 |
| 334.5 g/kg | 336.139 |
319.5 g/kg = 321.066 PSU
1 g/kg ≈ 1.0049 PSU · 1 mg/L ≈ 0.001 PSU · 1 ppm ≈ 0.001 PSU (dilute aqueous approximation)