Question 1

What is 4,070 ppm in PSU?

Accepted Answer

4,070 ppm = 4.09 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 4.09 PSU in ppm?

Accepted Answer

4.09 PSU = 4,070.1 ppm.

ppm	PSU
4,055 ppm	4.075
4,060 ppm	4.08
4,065 ppm	4.085
4,070	4.09
4,075 ppm	4.095
4,080 ppm	4.1
4,085 ppm	4.105

4,070 ppm to PSU

Formula