... Parameters: Calcium Ion Concentration Range10-1~5~×10-7 mol/L(4010~0.02ppm)Calcium Ion Concentration Accuracy ±1%F.STemperature Range0 ... -2,10-3,10-4,10-5,10-6 mol/L Memory99 Data sets with Date/Time stamping OutputUSB Communication Interface ... Power RequirementDC9V, using AC adapters, AC 220V/50Hz Dimensions210(L)*188(W)*60(H) mm Weight1.7kgDescription: 1.5-point ...