Question 1

What is 4,290 ppm in PSU?

Accepted Answer

4,290 ppm = 4.311 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 4.311 PSU in ppm?

Accepted Answer

4.311 PSU = 4,290 ppm.

ppm	PSU
4,275 ppm	4.296
4,280 ppm	4.301
4,285 ppm	4.306
4,290	4.311
4,295 ppm	4.316
4,300 ppm	4.321
4,305 ppm	4.326

4,290 ppm to PSU

Formula