Question 1

What is 1,800 ppm in PSU?

Accepted Answer

1,800 ppm = 1.809 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 1.809 PSU in ppm?

Accepted Answer

1.809 PSU = 1,800.2 ppm.

ppm	PSU
1,785 ppm	1.794
1,790 ppm	1.799
1,795 ppm	1.804
1,800	1.809
1,805 ppm	1.814
1,810 ppm	1.819
1,815 ppm	1.824

1,800 ppm to PSU

Formula