Description Total Chlorine ULR Handheld Colorimeter – Chlorine Level Testing Instrument With the HI-761 Total Chlorine Ultra Low Range Handheld Colorimeter you can check for total chlorine at the touch of a button and get instant results. Chlorine is the most common water disinfectant. Once in water it presents as free chlorine and total chlorine. Free chlorine is the chlorine that is available in the water to tackle bacteria. As the process of disinfection takes place, the levels of free chlorine will reduce. Total chlorine is the measurement of free and used chlorine in the water. If the total chlorine is high but the free chlorine is low or non-existent, then there is insufficient chlorine in the water to deal with the levels of contamination. Free chlorine is the most frequently tested of the two chemicals. By checking for the two as part of a rigorous testing procedure, adjustments in chlorine levels can be made quickly and easily and a high level of disinfection can be easily maintained. Perfect for palm and pocket The contoured style of the HI761 Total 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. Accurate and easy to use ±5ppb ± 5% of reading 1 ppb Designed to work with Hanna DPD reagents Large easy to read digits Auto shut-off The HI-761 Checker for Total Chlorine is Ideal for Koi Ponds Swimming pools and spas Disinfection Water and quality control checks Waste water treatment The HI-761 Checker for Total Chlorine comes complete with: 2 sample cuvettes 1 black cuvette cap 6 powder reagents for Total Chlorine 1 x 1.5V AAA battery Full working instructions The HI-761 Checker for Total Chlorine Specification: Range 0 to 500 (ppb) Resolution 1 ppb Precision ±5ppb ± 5% of reading Light Source LED @ 525 nm Light Detector Silicon photocell Environment 0 to 50°C (32 to 122°F); RH max 95% non-condensing Battery Type (1) 1.5V AAA Auto-off After 2 minutes of non-use and after read Dimensions 81.5 x 61 x 37.5 mm Weight 64 g
