Hanna Instruments

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Certificates of Analysis

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Iodine is often used as a disinfectant in place of chlorine or bromine in swimming pools and spas as it is less of an irritant to swimmers’ eyes and under adverse conditions, iodine also provides a more stable level of disinfection. However, it is difficult to dissolve in water, and has toxic and corrosive properties, meaning it is a less widely used method of disinfection.


Hanna can offer a wide range of photometers, both portable and bench meters, that are ideal for accurate determination of iodine concentration.