508.5 g/kg = 510.992 PSU
| g/kg | PSU |
|---|---|
| 493.5 g/kg | 495.918 |
| 498.5 g/kg | 500.943 |
| 503.5 g/kg | 505.967 |
| 508.5 | 510.992 |
| 513.5 g/kg | 516.016 |
| 518.5 g/kg | 521.041 |
| 523.5 g/kg | 526.065 |
508.5 g/kg = 510.992 PSU
1 g/kg ≈ 1.0049 PSU · 1 mg/L ≈ 0.001 PSU · 1 ppm ≈ 0.001 PSU (dilute aqueous approximation)