Question 1

What is 1,680 ppm in PSU?

Accepted Answer

1,680 ppm = 1.688 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 1.688 PSU in ppm?

Accepted Answer

1.688 PSU = 1,679.8 ppm.

ppm	PSU
1,665 ppm	1.673
1,670 ppm	1.678
1,675 ppm	1.683
1,680	1.688
1,685 ppm	1.693
1,690 ppm	1.698
1,695 ppm	1.703

1,680 ppm to PSU

Formula