157.5 g/kg = 158.272 PSU
| g/kg | PSU |
|---|---|
| 142.5 g/kg | 143.198 |
| 147.5 g/kg | 148.223 |
| 152.5 g/kg | 153.247 |
| 157.5 | 158.272 |
| 162.5 g/kg | 163.296 |
| 167.5 g/kg | 168.321 |
| 172.5 g/kg | 173.345 |
157.5 g/kg = 158.272 PSU
1 g/kg ≈ 1.0049 PSU · 1 mg/L ≈ 0.001 PSU · 1 ppm ≈ 0.001 PSU (dilute aqueous approximation)