Hanna Instruments HI96762 Low Range Free Chlorine Portable Photometer with Sample Cuvettes, 7-19/32" Length x 4-3/32" Width x 2-11/16" Height, 0.000 - 0.500mg/L, 0.001mg/L Resolution, 9V Battery

HI96762 was specially developed to measure low concentrations of free chlorine in drinking water. These meters use an exclusive positive-locking system to ensure that the cuvette is in the same place every time it is placed into the measurement cell. Chlorine is widely used in making many everyday products, but most notably, it is used for producing safe drinking water the world over. Even the smallest water supplies are now usually chlorinated. It is also extensively used in the production of paper products, dyestuffs, textiles, petroleum products, medicines, antiseptics, insecticides, food, solvents, paints, plastics, and many other consumer products. Most of the chlorine produced is used in the manufacture of chlorinated compounds for sanitation, pulp bleaching, disinfectants, and textile processing. Organic chemistry demands much from chlorine, both as an oxidizing agent and in substitution, since it often brings many desired properties in an organic compound when substituted for hydrogen, as in one form of synthetic rubber. HI96762 is supplied with 2 sample cuvettes with caps, 9V battery and instruction manual. 0.000 to 0.500 milligrams per liter range. 0.001 milligrams per liter resolution. +/-0.020 milligrams per liter +/-3 percent of reading at 25 degree C accuracy. Tungsten lamp. Silicon photocell with narrow band interference filter at 525nm light detector. Auto-off: after 10 minutes of non-use in measurement mode, after 1 hour of non-use in calibration mode with last reading reminder. 0 to 50 degree C (32 to 122 degree F); RH maximum 95 percent non-condensing environment. Measures 7.6" length by 4.1" width by 2.7" height. Adaptation of the standard method 4500-Cl G.