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. This free chlorine tester's compact design fits in your pocket or stores easily in your shop.

• 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.