Hanna Instruments HI96104 Cal Check pH, Free/Total Chlorine and Cyanuric Acid Portable Photometer, 7-19/32" Length x 4-3/32" Width x 2-11/16" height, 6.5 to 8.5 pH, 0.1 pH Resolution, LCD Display, 9V

Chlorine is the most common water disinfectant used in many swimming pools and spas. In swimming pools, spas and similar applications, cyanuric acid helps to stabilize the breakdown of chlorine, especially in sunlight. Frequent testing of both cyanuric acid and pH will help to minimize chlorine consumption. Specifically designed for swimming pool and spa applications, the HI 96104 measures pH, Free and total chlorine and cyanuric acid content. The HI 96104 meter measures pH, free and total chlorine and cyanuric acid content in water and wastewater. The reagents are in powder and liquid form depending on the parameter and they are supplied in dropper bottles and packets. Cal Check. User calibration. Certified calibration and verification standards. BEPS (battery error prevention system). Timer function. Auto shut-off. GLP Features. Range:6.5 to 8.5 pH, 0.00 to 5.00 milligrams per liter (ppm) cl, free, 0.00 to 5.00 milligrams per liter (ppm) cl, total, 0 to 80 milligrams per liter (ppm) cya. Resolution: 0.1 PH, 0.01 milligrams per liter cl, free, 0.01 milligrams per liter cl, total, 1 milligrams per liter (ppm) cya. Accuracy at 25 degree celsius: +/-0.1 pH, +/-0.03 milligrams per liter +/-3 percent of reading cl, free, +/-0.03 milligrams per liter +/-3 percent of reading cl, total, +/-0.1 milligrams per liter +/-15 percent of reading cya. Light source: tungsten lamp. Light detector: silicon photocell with narrow band interference filter at 525 nm. Power supply: 9V battery. Auto-off: after ten minutes of non-use in measurement mode; after one hour of non-use in calibration mode; with last reading reminder. Environment: 0 to 50 degree celsius (32 to 122 degree fahrenheit); RH max 95 percent non-condensing. Measures 7-19/32" length by 4-3/32" width by 2-11/16" height. Method: pH phenol red method, Chlorine adaptation of the EPA recommended DPD method 330.5, CYA adaptation of the turbidimetric method.