620 g/kg to PSU

620 g/kg = 623.038 PSU

g/kgPSU
605 g/kg607.964
610 g/kg612.989
615 g/kg618.013
620623.038
625 g/kg628.062
630 g/kg633.087
635 g/kg638.111

620 g/kg = 623.038 PSU

Formula

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