Question 1

What is 4,950 ppm in PSU?

Accepted Answer

4,950 ppm = 4.974 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 4.974 PSU in ppm?

Accepted Answer

4.974 PSU = 4,949.7 ppm.

ppm	PSU
4,935 ppm	4.959
4,940 ppm	4.964
4,945 ppm	4.969
4,950	4.974
4,955 ppm	4.979
4,960 ppm	4.984
4,965 ppm	4.989

4,950 ppm to PSU

Formula