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Monochloramine Test Kits

Visual Kit

Range MDL Method Type Kit Refill
0 - 20 ppm 0.625 ppm Hydroxybenzyl Alcohol (HBA) CHEMets K-6802 R-1402

Instrumental Kit

Range Method Type Kit
0 - 15.0 / 0 - 8.00 ppm Hydroxybenzyl Alcohol (HBA) Vacu-vials K-6803

The CHEMetrics test kits for the determination of Monochloroamine in aqueous solutions are based on patented Self-Filling Reagent Ampoule technology, and employs the HBA method, delivering sensitivity and accuracy within two minutes or less. Premixed. Premeasured. Precise. Each kit contains 30 tests. Suitable for potable water and municipal wastewater testing.

The Hydroxybenzyl Alcohol (HBA) Method

Monochloramine reacts with hydroxybenzyl alcohol (HBA), in the presence of sodium nitroferricyanide, to form a green colored complex. This test method measures monochloramine only. Results are expressed in ppm (mg/l) monochloramine as chlorine, NH2Cl-Cl2.

CHEMetrics offers ammonia test kits employing the HBA chemistry that can be used in conjunction with the monochloramine kits to determine free ammonia concentration.

Krom, Michael D., Spectrophotometric Determination of Ammonia: A study of a Modified Berthelot Reduction Using Salicylate and Dichloroisocyanurate, The Analyst, V105 pp. 305-316, 1980.


Municipal water facilities employ disinfection processes based on the characteristics of certain water quality parameters at the site. Sometimes facilities use a disinfection strategy that utilises a primary disinfectant followed by a secondary disinfectant. The primary disinfectant is used to render inactive or kill bacteria, viruses, and parasites, while the secondary disinfectant is used to support the primary disinfectant and maintain a disinfection residual as it passes through the distribution system.

Where mono-chloramination of drinking water is carried out, it is generally employed on water supplies with either long pipe networks, with raw water sources that are discoloured or high in organic matter, or where there are elevated levels of Trihalomethanes (THMs), a disinfection by-product (DBP), present.

Please see our monochloramine article for more information.