Question 1

What is 4,090 ppm in PSU?

Accepted Answer

4,090 ppm = 4.11 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 4.11 PSU in ppm?

Accepted Answer

4.11 PSU = 4,090 ppm.

ppm	PSU
4,075 ppm	4.095
4,080 ppm	4.1
4,085 ppm	4.105
4,090	4.11
4,095 ppm	4.115
4,100 ppm	4.12
4,105 ppm	4.125

4,090 ppm to PSU

Formula