Question 1

What is 1,140 ppm in PSU?

Accepted Answer

1,140 ppm = 1.146 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 1.146 PSU in ppm?

Accepted Answer

1.146 PSU = 1,140.4 ppm.

ppm	PSU
1,125 ppm	1.131
1,130 ppm	1.136
1,135 ppm	1.141
1,140	1.146
1,145 ppm	1.151
1,150 ppm	1.156
1,155 ppm	1.161

1,140 ppm to PSU

Formula