1,260 ppm to PSU

1,260 ppm = 1.266 PSU

ppmPSU
1,245 ppm1.251
1,250 ppm1.256
1,255 ppm1.261
1,2601.266
1,265 ppm1.271
1,270 ppm1.276
1,275 ppm1.281

1260 ppm = 1.266 PSU

Formula

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