1,615 ppm to PSU

1,615 ppm = 1.623 PSU

ppmPSU
1,600 ppm1.608
1,605 ppm1.613
1,610 ppm1.618
1,6151.623
1,620 ppm1.628
1,625 ppm1.633
1,630 ppm1.638

1615 ppm = 1.623 PSU

Formula

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