Question 1

What is 4,155 ppm in PSU?

Accepted Answer

4,155 ppm = 4.175 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 4.175 PSU in ppm?

Accepted Answer

4.175 PSU = 4,154.6 ppm.

ppm	PSU
4,140 ppm	4.16
4,145 ppm	4.165
4,150 ppm	4.17
4,155	4.175
4,160 ppm	4.18
4,165 ppm	4.185
4,170 ppm	4.19

4,155 ppm to PSU

Formula