678 g/kg to PSU

678 g/kg = 681.322 PSU

g/kgPSU
663 g/kg666.249
668 g/kg671.273
673 g/kg676.298
678681.322
683 g/kg686.347
688 g/kg691.371
693 g/kg696.396

678 g/kg = 681.322 PSU

Formula

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