906 PSU = 901.5822 g/kg
| PSU | g/kg |
|---|---|
| 891 PSU | 886.6554 |
| 896 PSU | 891.631 |
| 901 PSU | 896.6066 |
| 906 PSU | 901.5822 |
| 911 PSU | 906.5579 |
| 916 PSU | 911.5335 |
| 921 PSU | 916.5091 |
906 PSU = 901.5822 g/kg
1 g/kg ≈ 1.0049 PSU · 1 mg/L ≈ 0.001 PSU · 1 ppm ≈ 0.001 PSU (dilute aqueous approximation)