For determination of Total Phosphorus (phosphate) by the Molybdovanadate Test 'N Tube™ Method. Hach Method 10127. Range: 1.0 - 100.0 mg/L PO4 Set includes vials and reagents for 25-50 tests (dependent upon the number of reagent blank tests performed).
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Perform digestions and photometric measurements in the same vial.