Question 1

What is 1,005 ppm in PSU?

Accepted Answer

1,005 ppm = 1.01 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 1.01 PSU in ppm?

Accepted Answer

1.01 PSU = 1,005.1 ppm.

ppm	PSU
990 ppm	0.995
995 ppm	1
1,000 ppm	1.005
1,005	1.01
1,010 ppm	1.015
1,015 ppm	1.02
1,020 ppm	1.025

1,005 ppm to PSU

Formula