pH Mode  
Range -2.000 to 20.000
Resolution 0.1, 0.01, 0.001
Relative Accuracy ±0.002
Calibration Points up to 5
   
mV Mode  
Range ±2000.0
Resolution 0.1
Relative Accuracy ±0.2mV or ±0.05% of reading whichever is greater
Calibration Points 1
   
Temperature Mode  
Range 23° to 221°F (-5° to 105°C)
Resolution 0.1
Relative Accuracy ±0.1
   
DO Mode  
Relative Accuracy Polarographic: ±0.2mg/L; ±2%
RDO optical: ±0.1mg/L up to 8mg/L, ±0.2mg/L up to 20mg/L, 10% of reading beyond; ±2%
Calibration Water-saturated air, air-saturated water, manual (Winkler) and zero point
   
Inputs BNC, reference pin, 8-pin mini-DIN, stirrer port
Data Management 2000 points with date/time stamp
Output RS-232, USB
Display Graphic LCD; simultaneous display of measurement, temperature, date/time, sample ID, user ID and more