Summary Of Method; Reagents And Apparatus - Hach POCKET COLORIMETER II Instruction Manual

Phosphorus, Reactive,

Summary of Method

Orthophosphate reacts with molybdate in an acid medium to produce a
phosphomolybdate complex. Ascorbic acid then reduces the complex, giving an
intense molybdenum blue color.

Reagents and Apparatus

Required Reagents
Description
®
PhosVer 3 Phosphate Reagent Powder Pillows........................100/pkg .....21060-69
OR
®
PhosVer 3 Phosphate Reagent AccuVac
Required Apparatus
Description
Beaker, 50-mL, low form ...................................................................each .......1080-41
Cap, ampule, blue ........................................................................... 25/pkg .......1731-25
Sample Cell, 10-mL ...........................................................................6/pkg .... 24276-06
continued
®
Ampuls .................... 25/pkg .... 25080-25
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