4,685 ppm to PSU

4,685 ppm = 4.708 PSU

ppmPSU
4,670 ppm4.693
4,675 ppm4.698
4,680 ppm4.703
4,6854.708
4,690 ppm4.713
4,695 ppm4.718
4,700 ppm4.723

4685 ppm = 4.708 PSU

Formula

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