656 g/kg to PSU

656 g/kg = 659.214 PSU

g/kgPSU
641 g/kg644.141
646 g/kg649.165
651 g/kg654.19
656659.214
661 g/kg664.239
666 g/kg669.263
671 g/kg674.288

656 g/kg = 659.214 PSU

Formula

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