140.5 g/kg = 141.188 PSU
| g/kg | PSU |
|---|---|
| 125.5 g/kg | 126.115 |
| 130.5 g/kg | 131.139 |
| 135.5 g/kg | 136.164 |
| 140.5 | 141.188 |
| 145.5 g/kg | 146.213 |
| 150.5 g/kg | 151.237 |
| 155.5 g/kg | 156.262 |
140.5 g/kg = 141.188 PSU
1 g/kg ≈ 1.0049 PSU · 1 mg/L ≈ 0.001 PSU · 1 ppm ≈ 0.001 PSU (dilute aqueous approximation)