197.5 g/kg = 198.468 PSU
| g/kg | PSU |
|---|---|
| 182.5 g/kg | 183.394 |
| 187.5 g/kg | 188.419 |
| 192.5 g/kg | 193.443 |
| 197.5 | 198.468 |
| 202.5 g/kg | 203.492 |
| 207.5 g/kg | 208.517 |
| 212.5 g/kg | 213.541 |
197.5 g/kg = 198.468 PSU
1 g/kg ≈ 1.0049 PSU · 1 mg/L ≈ 0.001 PSU · 1 ppm ≈ 0.001 PSU (dilute aqueous approximation)