Hanna HI 755 Checker Marine Salt Water Alkalinity Photometer HI755

Item Description: Brand New Hanna Instruments HI 755 Checker®HC Alkalinity Photometer 0-300ppm(mg/l)   Improve the accuracy of your results for your saltwater aquarium with our simple handheld colorimeter. Our alkalinity colorimeter closes the distance between alkalinity test kits and advanced instrumentation. Standard test kits are limited with accuracy since they depend upon the human eye to discern colors. Our handheld colorimeter eliminates the struggle of matching to a color chart by providing a direct saltwater alkalinity result in ppm CaCO3. SPECS:. Specification Name Detail SKU HI755 Range 0 to 300 ppm CaCO₃ Resolution 1 ppm Accuracy @ 25°C/77°F ±5 ppm ±5% of reading Light Source LED @ 610 nm Light Detector silicon photocell Method colorimetric method. The reaction causes a distinctive range of colors from yellow to green to blue to develop Battery Type (1) 1.5V AAA Auto-off after ten minutes of non-use Environment 0 to 50°C (32 to 122°F); RH max 95% no