Hanna HI96752 Calcium and Magnesium Portable Photometer (Ca:0 to 400 mg/L (ppm), Mg:0 to 150 mg/L (ppm))

Warranty:  12 month
Range    
– Calcium: 0 to 400 mg/L (ppm)
– Magnesium: 0 to 150 mg/L (ppm)
Resolution    
– Calcium: 1 mg/L (ppm)
– Magnesium: 1 mg/L (ppm)
Accuracy @25°C    
– Calcium: ±10 mg/L ±5% of reading
– Magnesium: ±3 mg/L ±3% of reading
Light Source: light emitting diode
Light Detector: silicon photocell with narrow band interference filter @ 466 nm
Power Supply: 9V Battery
Auto-off: after ten minutes of non-use in measurement mode; after one hour of non-use in calibration mode; with last reading reminder
Environment: 0 to 50°C (32 to 122°F); RH max 95% non-condensing
Dimensions: 192 x 104 x 69 mm (7.6 x 4.1 x 2.7″)
Weight: 360 g (12.7 oz.)
Method    
– Calcium: adaptation of Oxalate method
– Magnesium: adaptation of the Calmagite method
Order Information: HI 96752 is supplied with sample cuvettes with caps (2), 9V battery and instruction manual.