Hanna HI96720 Ca Hardness, Standard Method, Portable Photometer

CAL CHECK™ User calibration Certified calibration and verification standards BEPS ( Battery Error Prevention System) TIMER function Auto shut-off GLP Features. The HI 96720 measures the calcium hardness content, as CaCO3, in water and wastewater in the 0.00 to 2.70 mg/ L ( ppm) range. This meter uses an exclusive positive-locking system to ensure that the cuvette is in the same position every time it is placed into the measurement cell. It is designed to fit cuvettes with a larger neck making it easier to add both sample and reagents. The cuvettes are made from special optical glass to obtain best results. Range 0.00 to 2.70 mg/ L Resolution 0.01 mg/ L Accuracy ± 0.11 mg/ L ± 5% of reading @ 25° C Light Source Tungsten lamp Light Detector Silicon photocell with narrow band interference filter @ 525nm Method Adaptation of the Standard Methods for the Examination of Water and Wastewater, 18th ed. Calmagite method. Environment 0 to 50° C ( 32 to 122° F) ; max 95% RH non-condensing Power Supply 9V battery Auto-Shut off after ten minutes of non-use in measurement mode; after one hour of non-use in calibration mode; with last reading reminder Dimensions 192 x 104 x 69 mm ( 7.6 x 4.1 x 2.7" ) Weight 360 g ( 12.7 oz.)