Hanna HI-3831F Chlorine Test KitThe Hanna HI 3831F Chlorine Test Kit is a reliable and easy to use solution for measuring free chlorine levels in water. Using the DPD colorimetric method, this manual chemical test kit provides clear, accurate results ideal for pools, drinking water, wastewater, and other sanitation applications. With no need for electronic instrumentation, its a perfect choice for both field and on site use. The included color comparator ensures fast visual
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