The HI3822 is a chemical test kit that uses a titrimetric method to measure sulfite as sodium sulfite (Na2SO3). The HI3822 is supplied complete with all of the reagents and equipment necessary to perform approximately 110 tests. Pre-made reagents for ease of use All reagents marked with expiration date and lot number for traceability Manual titration performed with starch indicator Specifications Range 0 to 20 mg/L (ppm) Na #39; #34; #34;SO #39; #34; #34;; 0 to 200 mg/L (ppm) Na #39; #34; #34;SO #39; #34; #34; Resolution 0.2 mg/L (0 to 20 mg/L range); 2 mg/L (0 to 200 mg/L range) Method iodometric Number of Tests 110 CTK Type Titration Weight 910 g Ordering Information HI3822 test kit comes with 30 mL sulfamic acid solution, 30 mL EDTA reagent, 15 mL sulfuric acid solution, 10 mL starch indicator, 120 mL titrant solution, 20 mL calibrated vessel, 50 mL calibrated vessel, and calibrated syringe with tip.