| Votes | By | Price |
| hanna-instruments |
| Model No. | HI 2020 |
| Parameters Measured | pH, EC, DO |
| Electrodes | HI11310, HI11311, HI12300,HI12310, HI10530 (EC) , HI10430 (DO) |
| Output | 5.5” LCD + Dual USB ports |
| Controls | Captive touch controls, 9 Keys |
| pH Range | -2.00 to 16.00 pH (Basic Mode) -2.000 to 16.000 pH (Standard Mode) +/-1000.0 mV for pH |
| pH Resolution | 0.01 pH, 0.001 pH 0.1 mV |
| pH Accuracy | ±0.01 pH, ±0.002 pH |
| Temperature Range | -20.0 to 120.0°C; -4.0 to 248.0°F |
| Temperature Accuracy @ 25°C/77°F | ±0.5°C; ±1.0°F |
| Other Features | Rechargeable Battery |
| Launch Date | 2013 |