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Summary of Method
Required Reagents
Description
High Range Reactive Phosphorus Reagent Set .............................................................. 100 tests .............22441-00
Includes:
Amino Acid Reagent ......................................................................... 1 mL ................ 100 mL MDB.......1934-32
Molybdate Reagent............................................................................ 1 mL ................ 100 mL MDB.......2236-32
Required Apparatus
Cylinder, 25-mL, graduated, mixing...................................................... 1 ....................... each......................1896-40
Sample Cells, 10-20-25 mL, w/cap......................................................... 2 ....................... 6/pkg.................24019-06
Required Standards
Phosphate Standard Solution, 10-mg/L.......................................................................... 946 mL...............14204-16
Phosphate Standard Solution, 2-mL Voluette
Water, deionized ................................................................................................................. 4 liters ....................272-56
PhosphorusReac_None_Other_AMI_Eng_Ody.fm
Phosphorus, Reactive (Orthophosphate)
In a highly acidic solution, ammonium molybdate reacts with orthophosphate to
form molybdophosphoric acid. This complex is then reduced by the amino acid
reagent to yield an intensely colored molybdenum blue compound. Test results
are measured at 530 nm.
®
Ampule, 500-mg/L PO
Quantity Required
Per Test
Unit
3–
............... 16/pkg...............14242-20
4
Phosphorus, Reactive (Orthophosphate)
Cat. No.
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