520 g/kg to PSU

520 g/kg = 522.548 PSU

g/kgPSU
505 g/kg507.474
510 g/kg512.499
515 g/kg517.523
520522.548
525 g/kg527.572
530 g/kg532.597
535 g/kg537.621

520 g/kg = 522.548 PSU

Formula

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