242.5 g/kg = 243.688 PSU
| g/kg | PSU |
|---|---|
| 227.5 g/kg | 228.615 |
| 232.5 g/kg | 233.639 |
| 237.5 g/kg | 238.664 |
| 242.5 | 243.688 |
| 247.5 g/kg | 248.713 |
| 252.5 g/kg | 253.737 |
| 257.5 g/kg | 258.762 |
242.5 g/kg = 243.688 PSU
1 g/kg ≈ 1.0049 PSU · 1 mg/L ≈ 0.001 PSU · 1 ppm ≈ 0.001 PSU (dilute aqueous approximation)