Hanna Instruments HI96705C Silica Portable Photometer Kit

Cal Check. User calibration. Certified calibration and verification standards. BEPS (battery error prevention system). TIMER function. Auto shut-off. GLP Features. Silica is found in all natural waters in the dissolved mineral form. Silica is only slightly soluble in water; solubility and therefore the form of silica in water depends on the pH level of the water and on the minerals containing silica in contact with water. Silica€s presence in industrial applications is undesirable since it causes scale. In particular, high pressure turbines are highly effected by this factor. Heating systems and reverse osmosis plants also require monitoring of silica. Range: 0.00 to 2.00 milligrams per liter (ppm). Resolution: 0.01 milligrams per liter (ppm). Accuracy:+/-0.03 milligrams per liter +/-3 percent of reading at 25 degree C. Light source: tungsten lamp. Light detector: silicon photocell with narrow band interference filter at 610 nm. Environment: 0 to 50 degree C (32 to 122 degree F); RH max 95 percent non-condensing. Power supply: (1) 9v battery. Auto-off: After 10 minutes of non-use in measuring mode; after 1 hour of non-use in calibration mode. Measures 7-19/32" length by 4-3/32" width by 2-11/16" height. Method: adaptation of the ASTM D859 method of the heteropoly blue method.