255 g/kg to PSU

255 g/kg = 256.249 PSU

g/kgPSU
240 g/kg241.176
245 g/kg246.2
250 g/kg251.225
255256.249
260 g/kg261.274
265 g/kg266.298
270 g/kg271.323

255 g/kg = 256.249 PSU

Formula

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