40.5 g/kg to PSU

40.5 g/kg = 40.698 PSU

g/kgPSU
34.5 g/kg34.669
36.5 g/kg36.679
38.5 g/kg38.689
40.540.698
42.5 g/kg42.708
44.5 g/kg44.718
46.5 g/kg46.728

40.5 g/kg = 40.698 PSU

Formula

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