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Originally Posted by Ruth
Steve the gizmo is a Hanna HI 93713 and it says it can read PO4 in water, wastewater and seawater in the 0.00 to 2.50 mg/L (ppm) range.
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Oh so it is an electric one.. hmm do you know if it will read organic phosphate? the test kits we get will only read inorganic phosphate so if that one will read organic phosphate it might explain the higher reading.
Steve
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