Question 1

What is 1,290 ppm in PSU?

Accepted Answer

1,290 ppm = 1.296 PSU. Use the converter on this page to convert to other salinity / tds units instantly.

Question 2

How do you convert ppm to PSU?

Accepted Answer

Formula: 1 g/kg ≈ 1.0049 PSU · 1 mg/L ≈ 0.001 PSU · 1 ppm ≈ 0.001 PSU (dilute aqueous approximation). Multiply your ppm value by the appropriate factor to get PSU, or use the interactive converter above.

Question 3

What is 1.296 PSU in ppm?

Accepted Answer

1.296 PSU = 1,289.7 ppm.

ppm	PSU
1,275 ppm	1.281
1,280 ppm	1.286
1,285 ppm	1.291
1,290	1.296
1,295 ppm	1.301
1,300 ppm	1.306
1,305 ppm	1.311

1,290 ppm to PSU

Formula