691 g/kg to PSU

691 g/kg = 694.386 PSU

g/kgPSU
676 g/kg679.312
681 g/kg684.337
686 g/kg689.361
691694.386
696 g/kg699.41
701 g/kg704.435
706 g/kg709.459

691 g/kg = 694.386 PSU

Formula

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