303.5 g/kg = 304.987 PSU
| g/kg | PSU |
|---|---|
| 288.5 g/kg | 289.914 |
| 293.5 g/kg | 294.938 |
| 298.5 g/kg | 299.963 |
| 303.5 | 304.987 |
| 308.5 g/kg | 310.012 |
| 313.5 g/kg | 315.036 |
| 318.5 g/kg | 320.061 |
303.5 g/kg = 304.987 PSU
1 g/kg ≈ 1.0049 PSU · 1 mg/L ≈ 0.001 PSU · 1 ppm ≈ 0.001 PSU (dilute aqueous approximation)