1,930 ppm = 1.939 PSU
| ppm | PSU |
|---|---|
| 1,915 ppm | 1.924 |
| 1,920 ppm | 1.929 |
| 1,925 ppm | 1.934 |
| 1,930 ppm | 1.939 |
| 1,935 ppm | 1.944 |
| 1,940 ppm | 1.95 |
| 1,945 ppm | 1.955 |
1930 ppm = 1.939 PSU
1 g/kg ≈ 1.0049 PSU · 1 mg/L ≈ 0.001 PSU · 1 ppm ≈ 0.001 PSU (dilute aqueous approximation)