1,720 ppm to PSU

1,720 ppm = 1.728 PSU

ppmPSU
1,705 ppm1.713
1,710 ppm1.718
1,715 ppm1.723
1,7201.728
1,725 ppm1.733
1,730 ppm1.738
1,735 ppm1.744

1720 ppm = 1.728 PSU

Formula

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