 
                    | Model | Bante321-NO3 | 
| Ion Concentration | |
| Range | 7×10-6 to 1M, 0.4 to 62000ppm | 
| Resolution | 0.001, 0.01, 0.1, 1 | 
| Accuracy | ±0.5% F.S. | 
| Calibration Points | 2 to 5 points | 
| Calibration Solutions | 0.001, 0.01, 0.1, 1, 10, 100, 1000, 10000 | 
| Measurement Units | ppm, mg/L, mol/L, mmol/L | 
| mV | |
| Range | ±1999.9mV | 
| Resolution | 0.1mV | 
| Accuracy | ±0.2mV | 
| Temperature | |
| Range | 0 to 105°C/32 to 221°F | 
| Resolution | 0.1°C/0.1°F | 
| Accuracy | ±0.5°C/±0.9°F | 
| Offset Calibration | 1 point | 
| Calibration Range | Reading ±10°C | 
| General Specifications | |
| Temperature Compensation | 0 to 100°C/32 to 212°F, manual or automatic | 
| Stability Criteria | Low or high | 
| Calibration Due Alarm | 1 to 31 days or off | 
| Auto-Power Off | 10, 20 or 30 minutes after last key pressed | 
| Memory | Stores up to 500 data sets | 
| Output | USB communication interface | 
| Connector | BNC, 3.5mm jack socket | 
| Display | Custom LCD (80×60mm) | 
| Power | 3×1.5V AA batteries or DC5V power adapter | 
| Battery Life | Approximately 150 hours (turn off the backlight) | 
| Dimensions | 170(L)×85(W)×30(H)mm | 
| Weight | 300g |