This Chlorine Dioxide kit can be used to verify the level of chlorine dioxide in a water sample. Chlorine Dioxide is a very popular active ingredient for sanitization and disinfection. This kit is essential for any application requiring secondary validation and comes with approximately 60-75 tests.

Applications include cleaning, food processing, disinfectant testing, & environmental cleaning.

Recommended range: 50- 4000 ppm

Each drop is 50, 100 , or 500 ppm depending on the initial sample size.

1 mL sample 1 drop = 500 ppm
5 mL sample 1 drop = 100 ppm
10 mL sample 1 drop = 50 ppm

INSTRUCTIONS:
Add 10 drops of Potassium Iodide 10% to the vial
Add 10 drops of Citric Acid and swirl to mix.
Select sample size for drop equivalency. Sample can either be 1, 5, or 10 mL.
Use the syringe to add the desired sample to the vial. Swirl to mix. A yellow color indicates available ClO2.
Add 2 drops of Starch Indicator Solution 0.5% one drop at a time while swirling. Sample should turn blueblack.
Add Sodium Thiosulfate Titrant High one drop at a time while swirling. Count the number of drops until the sample just turns from blue-black to colorless.

Interferences: All oxidizable substances such as Organic Matter, Sulfides and Nitrites, are positive interferences. Metals, namely copper, can stop or slow the chemical reaction.