1,320 ppm to PSU

1,320 ppm = 1.326 PSU

ppmPSU
1,305 ppm1.311
1,310 ppm1.316
1,315 ppm1.321
1,3201.326
1,325 ppm1.331
1,330 ppm1.337
1,335 ppm1.342

1320 ppm = 1.326 PSU

Formula

1 g/kg ≈ 1.0049 PSU · 1 mg/L ≈ 0.001 PSU · 1 ppm ≈ 0.001 PSU (dilute aqueous approximation)