494.5 g/kg = 496.923 PSU
| g/kg | PSU |
|---|---|
| 479.5 g/kg | 481.85 |
| 484.5 g/kg | 486.874 |
| 489.5 g/kg | 491.899 |
| 494.5 | 496.923 |
| 499.5 g/kg | 501.948 |
| 504.5 g/kg | 506.972 |
| 509.5 g/kg | 511.997 |
494.5 g/kg = 496.923 PSU
1 g/kg ≈ 1.0049 PSU · 1 mg/L ≈ 0.001 PSU · 1 ppm ≈ 0.001 PSU (dilute aqueous approximation)