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Bromine Test Kit

Visual Kit

Range MDL Method Type Kit Cat. No. Refill Cat. No.
0.0 - 2.2 & 0 - 11 ppm 0.125 ppm DPD CHEMets K-1605 R-7904

CHEMetrics offers test kits employing the well-known DPD reagent to deliver sensitivity and accuracy within two minutes or less. Based on CHEMetrics patented Self-Filling Reagent Ampoule technology. Premixed. Premeasured. Precise. Each kit contains 30 tests.

The DPD Method

The CHEMetrics Bromine test method employs the DPD chemistry. Potassium iodide is added to the sample before analysis. Bromine reacts with the iodide to liberate iodine. The iodine reacts with the DPD (N, N-diethyl-p-phenylenediamine) to form a pink colour. Results are expressed in ppm (mg/l) bromine as Br2.

USEPA Methods for Chemical Analysis of Water and Wastes, Method 330.5 (1983). APHA Standard Methods, 21st ed., Method 4500 Cl G (2005).

Technical Data Sheet


Bromine is used for the disinfection of water, and is commonly used in drinking water systems, spas, swimming pools, and cooling towers. Bromine is sometimes used as a chlorine replacement, particularly when skin sensitivities are a concern. Bromine is typically measured to determine whether water disinfection programs are performing efficiently. Having too much bromine indicates an overuse of the chemical leading to lost profit and unwanted side effects while low bromine represents inadequate disinfection.

What is Bromine?

Bromine (Br) is a naturally occurring element of the halogen family an oxidising agent. Bromine occurs in molecular form as Br2. At room temperature it is a volatile red-brown liquid that readily evaporates into a red-brown vapour. It is less reactive and volatile than chlorine, degrading more slowly in sunlight, but more volatile and reactive than iodine. In nature, because of its reactivity, it is found as colourless, soluble mineral bromide salt, and is found in significant concentrations in the world's oceans, having leached out of the earth's crust.