Chlorine is the most commonly used water disinfectant. applications vary from treatment of drinking water and waste water to pool and spa sanitization and food processing to sterilization. The HANNA instruments line includes colorimetric chemical test kits, measuring both free and total chlorine. The instruments featured in this section provide greater resolution, better accuracy and immediate results. Choose between three different models: HI 93701 for measuring free chlorine and HI 93711 for free (0 to 2.5 mg/L) and total (0 to 3.5 mg/L) chlorine. For applications that require a more extensive measurement range, HANNA instruments also offers the HI 93734 which measures both free and total chlorine from 0.00 to 9.99 mg/L.

HI 93701 is supplied complete with 2 cuvets, batteries and instructions. HI 93701C, kit includes HI 93701, hard carrying case and reagents. HI 93711 is supplied complete with 2 cuvets, batteries and instructions. HI 93711C, kit includes HI 93711, hard carrying case and reagents. HI 93734 is supplied complete with 2 cuvets, batteries and instructions.