223.5 g/kg = 224.595 PSU
| g/kg | PSU |
|---|---|
| 208.5 g/kg | 209.522 |
| 213.5 g/kg | 214.546 |
| 218.5 g/kg | 219.571 |
| 223.5 | 224.595 |
| 228.5 g/kg | 229.62 |
| 233.5 g/kg | 234.644 |
| 238.5 g/kg | 239.669 |
223.5 g/kg = 224.595 PSU
1 g/kg ≈ 1.0049 PSU · 1 mg/L ≈ 0.001 PSU · 1 ppm ≈ 0.001 PSU (dilute aqueous approximation)