Ca AND Mg HARDNESS PHOTOMETERS
Water, with exception to distilled water, contains dissolved salts (magnesium and calcium carbonates). The concentration of these salts determines the water Hardness, which can be expressed in calcium carbonate or magnesium carbonate. The sum of these two represents the total hardness level. In addition, this parameter is also related to the phenomenon of pipe rusting in water heating and cooling systems, reverse osmosis and demineralization plants.
HI 96720 are supplied with (2) sample cuvettes with caps, 9V battery and instructions. CAL CHECK™ standards and reagents sold separately.
|Range||0.00 to 2.70 mg/L (ppm)|
|Resolution||0.01 mg/L (ppm)|
|Precision||±0.11 mg/L ±5% of reading|
|Light Source||Tungsten lamp|
|Light Detector||Silicon photocell with narrow band interference filter @ 575nm|
|Method||Adaptation of the Standard Methods for the Examination of Water and Wastewater, 18th ed. Calmagite method.|
|Reagents & Standards|
|HI 96720-11||CAL CHECK™ standard cuvettes|
|HI 93720-01||Hardness Calcium, Calmagite Method (100 Tests)|
|HI 93720-03||Hardness Calcium, Calmagite Method (300 Tests)|