1,270 ppm to PSU

1,270 ppm = 1.276 PSU

ppmPSU
1,255 ppm1.261
1,260 ppm1.266
1,265 ppm1.271
1,2701.276
1,275 ppm1.281
1,280 ppm1.286
1,285 ppm1.291

1270 ppm = 1.276 PSU

Formula

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