DO Mode  
Concentration Range Polarographic: 0 to 90mg/L
RDO optical: 0 to 50mg/L
Concentration Resolution 0.01, 0.1
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%
% Saturation Range Polarographic: 0 to 600
RDO optical: 0 to 500
% Saturation Resolution 0.1, 1
Salinity Factor 0 to 45 ppt, manual
Temperature Mode  
Range -5 to 105
Resolution 0.1
Relative Accuracy ±0.1
Display Graphic LCD; simultaneous display of measurement, temperature, date/time, sample ID, user ID and more
Inputs 8-pin mini-DIN, stirrer port
Sensor Type Polarographic or RDO (optical/luminescence-based) DO
Data Management 2000 points with date/time stamp
Outputs RS-232, USB
Battery Power Four AA
Battery Life 2000 hours
Special Feature Direct control of stirrer (sold separately), Multi-language interface, Accepts polarographic or RDO optical DO probes
Relative Humidity 5 to 85% non-condensing
Power Supply Universal AC line voltage or optional four “AA” batteries