| Model | DO400F | |
| Parameters | DO/Temp(DO Saturation). | |
| Dissolved Oxygen Concentration | Sensor Type | Polarographic |
| Range | 0.00 to 99.99 mg/L | |
| Resolution | 0.01mg/L | |
| Accuracy | ±0.3mg/L (0.00 to 20.00 mg/L); ±10% (20.00 to 99.99 mg/L) | |
| Calibration Points | Air-saturated water or zero point | |
| Barometric Compensation | Yes | |
| Manual Salinity Factor Correction | Yes | |
| DO Saturation | Range | (0.0 to 600.0)% |
| Resolution | 0.1% | |
| Accuracy | ±2.0% | |
| Temperature | Range | -10 to 135 ºC, 14 to 275 ºF |
| Unit | ºC, ºF | |
| Resolution | 0.1 | |
| Accuracy | ±0.1 | |
| Measurement | Reading Mode | Auto Read (Fast, Medium, Slow), Timed, Continuous |
| Reading Prompts | Reading, Stable, Locked | |
| Temp. Compensation | ATC, MTC | |
| Data management | Data Storage | 500 results each |
| GLP Features | Yes | |
| Inputs | DO with Temp. Probe | 4-pin aviation connector |
| Outputs | USB | USB 2.0 flash memory device, PC |
| RS 232 | printer | |
| Display options | Backlight | Yes |
| Auto Shutdown | 1~60 min, off | |
| IP Rating | IP54 | |
| Date and Time | Yes | |
| General | Power | AC Adapter, 100-240V AC input, DC9V output |
| Dimensions | 242×195× 68 mm | |
| Weight | 900g (1.98 lb) | |