Hanna Instruments HI96737 Silver Portable Photometer with Sample Cuvettes, 7-19/32" Length x 4-3/32" Width x 2-11/16" Height, 0.000 - 1.000mg/L (ppm), 0.001mg/L (ppm) Resolution, 9V Battery

Small quantities of silver are bacteriostatic or bactericidal. As a result, it is at times used in disinfection of pools and spas, as well as in water filters. The presence of silver in water is generally indicative of pollution from mainly film manufacturers, film processors and surface finishers. In fact, silver levels are closely monitored in these sectors since its presence can cause discoloration of the skin, eyes and mucous membranes. The HI96737 measures the silver content in water and wastewater in the 0.000 to 1.000 milligrams per liter (ppm) range. This instrument uses an exclusive positive-locking system to ensure that the cuvette is in the same place every time it is placed into the measurement cell. The cuvette has a very important role because it is an optical element and thus requires particular attention. It is important that both, the measurement and the calibration (zeroing) cuvettes, are optically identical to provide the same measurement conditions. 0.001 milligrams per liter (ppm) resolution. +/-0.005 milligrams per liter +/-10 percent of reading at 25 degree C accuracy. Tungsten lamp. Silicon photocell with narrow band interference filter at 575nm light detector. 0 to 50 degree C (32 to 122 degree F); RH maximum 95 percent non-condensing environment. Auto-off: after 10 minutes of non-use in measuring mode, after 1 hour of non-use in calibration mode. Measures 7.6" length by 4.1" width by 2.7" height. Adaptation of the PAN method.