Salinities: PPT vs PPM

[DannyI]

That's parts per billion. PPB would be smaller in comparison to PPM. PPT is parts per thousand, PPM is parts per million. So it's : PPT = 1 part in a thousand; PPM = 1 part in a million; PPB= 1 part in a billion






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[Gerald]

[QUOTE=DannyI;406207]That's parts per billion. PPB would be smaller in comparison to PPM. PPT is parts per thousand, PPM is parts per million. So it's : PPT = 1 part in a thousand; PPM = 1 part in a million; PPB= 1 part in a billion


One field test I use to run was oxygen level in untreated [no sufphite treatment] Deareated boiler feed water. This test was done in a big glass tube and after the sample was gathered, a chemical was injected. The change of color determined the PPB amount of oxygen in the water.

The "test" was run every couple of months to determine if the steam injection process was working properly and was "stripping" out the oxygen from the water.

If the test showed more that ~ 3 PPB, I would test more often to determine if / when maintence repairs would be required.