659 g/kg to PSU

659 g/kg = 662.229 PSU

g/kgPSU
644 g/kg647.156
649 g/kg652.18
654 g/kg657.205
659662.229
664 g/kg667.254
669 g/kg672.278
674 g/kg677.303

659 g/kg = 662.229 PSU

Formula

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