66.5 g/kg to PSU

66.5 g/kg = 66.826 PSU

g/kgPSU
51.5 g/kg51.752
56.5 g/kg56.777
61.5 g/kg61.801
66.566.826
71.5 g/kg71.85
76.5 g/kg76.875
81.5 g/kg81.899

66.5 g/kg = 66.826 PSU

Formula

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