Does converting a measurement from PO?-P to PO? give the total phosphorus reading?
Does converting a measurement from PO₄-P to PO₄ give the total phosphorus reading?
No, converting from PO₄-P to PO₄ does not give the Total phosphorus reading. Total phosphate is the sum of organic and inorganic forms of phosphate and requires a digestion using heat, acid and persulfate to convert organic and condensed phosphates to orthophosphate for measurement.