Phospherous to phosphate conversion?
- Thread starter Floridiot
- Start date
ppm is essentially mg/L, but is off by 2.3%.
This article explains these differences:
The Units of Measure of Reefkeeping
http://reefkeeping.com/issues/2005-08/rhf/index.php
from it:
ppm (part per million)
ppm is a unit of proportion equal to 10-6. It is equal to 10-3 g/kg and 1 mg/kg, and is close to 10-3 g/L or 1 mg/L (in fresh water; in seawater, it equals about 1.023 x 10-3 g/L). It is often used to measure the concentrations of different species in reef aquaria. A calculator for various weight-related units can be found here.
and
ppm-P (part per million phosphorus)
ppm-P is a way to measure total phosphorus atoms in solution. It is equal to the ppm concentration of phosphorus atoms, regardless of what chemical form they take. It is often used to describe the concentrations of phosphorus in dissolved inorganic phosphate, dissolved organic matter (DOM), particulate organic matter (POM), or total organic matter (TOM) in seawater.
PPM-P = 0.33 x ppm phosphate
This article explains these differences:
The Units of Measure of Reefkeeping
http://reefkeeping.com/issues/2005-08/rhf/index.php
from it:
ppm (part per million)
ppm is a unit of proportion equal to 10-6. It is equal to 10-3 g/kg and 1 mg/kg, and is close to 10-3 g/L or 1 mg/L (in fresh water; in seawater, it equals about 1.023 x 10-3 g/L). It is often used to measure the concentrations of different species in reef aquaria. A calculator for various weight-related units can be found here.
and
ppm-P (part per million phosphorus)
ppm-P is a way to measure total phosphorus atoms in solution. It is equal to the ppm concentration of phosphorus atoms, regardless of what chemical form they take. It is often used to describe the concentrations of phosphorus in dissolved inorganic phosphate, dissolved organic matter (DOM), particulate organic matter (POM), or total organic matter (TOM) in seawater.
PPM-P = 0.33 x ppm phosphate
You're welcome.
Happy Reefing.
Happy Reefing.
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