227.5 g/kg = 228.615 PSU
| g/kg | PSU |
|---|---|
| 212.5 g/kg | 213.541 |
| 217.5 g/kg | 218.566 |
| 222.5 g/kg | 223.59 |
| 227.5 | 228.615 |
| 232.5 g/kg | 233.639 |
| 237.5 g/kg | 238.664 |
| 242.5 g/kg | 243.688 |
227.5 g/kg = 228.615 PSU
1 g/kg ≈ 1.0049 PSU · 1 mg/L ≈ 0.001 PSU · 1 ppm ≈ 0.001 PSU (dilute aqueous approximation)