317.5 g/kg = 319.056 PSU
| g/kg | PSU |
|---|---|
| 302.5 g/kg | 303.982 |
| 307.5 g/kg | 309.007 |
| 312.5 g/kg | 314.031 |
| 317.5 | 319.056 |
| 322.5 g/kg | 324.08 |
| 327.5 g/kg | 329.105 |
| 332.5 g/kg | 334.129 |
317.5 g/kg = 319.056 PSU
1 g/kg ≈ 1.0049 PSU · 1 mg/L ≈ 0.001 PSU · 1 ppm ≈ 0.001 PSU (dilute aqueous approximation)