669 g/kg to PSU

669 g/kg = 672.278 PSU

g/kgPSU
654 g/kg657.205
659 g/kg662.229
664 g/kg667.254
669672.278
674 g/kg677.303
679 g/kg682.327
684 g/kg687.352

669 g/kg = 672.278 PSU

Formula

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