Question 1

What is 4,240 ppm in PSU?

Accepted Answer

4,240 ppm = 4.261 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 4.261 PSU in ppm?

Accepted Answer

4.261 PSU = 4,240.2 ppm.

ppm	PSU
4,225 ppm	4.246
4,230 ppm	4.251
4,235 ppm	4.256
4,240	4.261
4,245 ppm	4.266
4,250 ppm	4.271
4,255 ppm	4.276

4,240 ppm to PSU

Formula