For determination of Reactive Phosphorus (ortho-phosphate) by the PhosVer® 3 Ascorbic Acid Test ‘N Tube™ method. Hach Method 8048. Range: 0.06 – 5.00 mg/L PO4. Set includes: PhosVer® 3 Phosphate Reagent Powder Pillows and Reactive Phosphorus Test ‘N Tube Dilution Vials for up to 50 tests.
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