Question 1

What is 4,140 ppm in PSU?

Accepted Answer

4,140 ppm = 4.16 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 4.16 PSU in ppm?

Accepted Answer

4.16 PSU = 4,139.7 ppm.

ppm	PSU
4,125 ppm	4.145
4,130 ppm	4.15
4,135 ppm	4.155
4,140	4.16
4,145 ppm	4.165
4,150 ppm	4.17
4,155 ppm	4.175

4,140 ppm to PSU

Formula