Question 1

What is 4,555 ppm in PSU?

Accepted Answer

4,555 ppm = 4.577 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 4.577 PSU in ppm?

Accepted Answer

4.577 PSU = 4,554.7 ppm.

ppm	PSU
4,540 ppm	4.562
4,545 ppm	4.567
4,550 ppm	4.572
4,555	4.577
4,560 ppm	4.582
4,565 ppm	4.587
4,570 ppm	4.592

4,555 ppm to PSU

Formula