198.5 g/kg = 199.473 PSU
| g/kg | PSU |
|---|---|
| 183.5 g/kg | 184.399 |
| 188.5 g/kg | 189.424 |
| 193.5 g/kg | 194.448 |
| 198.5 | 199.473 |
| 203.5 g/kg | 204.497 |
| 208.5 g/kg | 209.522 |
| 213.5 g/kg | 214.546 |
198.5 g/kg = 199.473 PSU
1 g/kg ≈ 1.0049 PSU · 1 mg/L ≈ 0.001 PSU · 1 ppm ≈ 0.001 PSU (dilute aqueous approximation)