Reagent set, sulfite, digital titrator

For the determination of Sulfite, 4->400mg/l SO3.
For determination of sulfite by iodate-iodide Digital Titrator titration, Hach Method 8216. Range: 4 to 400+ mg/L SO3. Reagent Set includes: Dissolved Oxygen 3 Reagent Powder Pillows, Iodate-Iodide Cartridge ( 0.3998 N), and Starch Indicator. Approximately 40-100 tests