The HI 701 Hanna 'Free' Checker bridges the gap between simple chemical test kits and professional instrumentation. With an accuracy of ±0.03 mg/L (ppm) and 0.01 mg/L (ppm) resolution it provides digital readout of Free Chlorine levels in water. Perfect for palm and pocket. The contoured style of the HI-701 Free Chlorine Checker is designed to fit in the palm of your hand. The large LCD is easy to read and the auto shut-off feature ensures the battery life will not be drained if you forget to turn it off.
A real world first - with the Hanna Free Chlorine Checker you can check for chlorine at the touch of a button and get instant results. Chlorine is the most common water disinfectant and by monitoring chlorine regularly and accurately, serious health and safety risks can be avoided.
EPA approved DPD method Standard Method 4500-Cl G.