672.5 PSU = 669,220.8 mg/L
| PSU | mg/L |
|---|---|
| 657.5 PSU | 654,294 |
| 662.5 PSU | 659,269.6 |
| 667.5 PSU | 664,245.2 |
| 672.5 PSU | 669,220.8 |
| 677.5 PSU | 674,196.4 |
| 682.5 PSU | 679,172.1 |
| 687.5 PSU | 684,147.7 |
672.5 PSU = 669,220.8 mg/L
1 g/kg ≈ 1.0049 PSU · 1 mg/L ≈ 0.001 PSU · 1 ppm ≈ 0.001 PSU (dilute aqueous approximation)