Free Total Chlorine, Total Hardness, Iron and pH 5 meters in 1 Lab grade accuracy and fast response Supplied with starter kit Chlorine and pH are two of the most closely monitored parameters in water quality tests. Hardness is also an important parameter, attentively regulated to reduce waste or ensure proper functioning of equipment. Iron on the other hand can cause unpleasant taste or stain kitchenware or laundry. With HI 96745 you have a powerful instrument to keep all these parameters under control. The microprocessor-based HI 96745 has been factory programmed to read the above parameters with such ease that it can be operated by technical and non-technical personnel alike. HI 96735 is supplied with 3 cuvets, battery and instructions.