85.5 PSU to ppm

85.5 PSU = 85,083.1 ppm

PSUppm
70.5 PSU70,156.2
75.5 PSU75,131.9
80.5 PSU80,107.5
85.585,083.1
90.5 PSU90,058.7
95.5 PSU95,034.3
100.5 PSU100,010

85.5 PSU = 85,083.1 ppm

Formula

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