Hanna HI720 钙硬度测定仪（0.00 - 2.70 ppm）

Range: 0.00 - 2.70 ppm
Resolution: 0.01 ppm
Accuracy: ± 0.20 ppm ±5% 
Light source: LED @ 525 nm
Light Detector: Silicon photocell
Method: Adaptation of the Standard Methods for the Examination of Water and Wastewater, 18th edition, Calmagite method. The reaction between calcium and reagents causes a reddish-violet tint in the sample. 
Environment:0 - 50°C
Battery Type: (1) PIN 1.5V AAA
Auto-off: After ten minutes of non-use
Dimensions: v
Weight: 64g
Ordering Information: HI720 Checker®HC is supplied with 2 cuvettes and caps, reagent starter kit (6 packets of reagent), 1 X 1.5X AAA battery, and an instruction manual