Hanna (HI701) Free Chlorine Colorimeter - Checker HC TBY4_S7LMK54

Get accurate water testing results with the HI701 Free Chlorine Colorimeter. With a digital read out, there is no more struggling to determine colors visually. Easier to use and more accurate than chemical test kits. One-button operation makes getting your free chlorine results simple. Great for water quality, environmental testing, and pools & spas.