| Votes | By | Price |
| hanna instruments |
| Model No | HI 4522 |
| Parameters Measured | pH/ORP/ISE and EC/TDS/Resistivity/Salinity |
| Electrodes | HI 1131B (pH), HI 76312(EC), HI 7662-T(Temp) |
| Output | color graphic LCD + USB port + RS232 |
| Controls | 6 Liquid Proof Buttons |
| pH Range | -2.000 to 20.000 pH |
| pH Resolution | 0.1 pH; 0.01 pH; 0.001 pH |
| pH Accuracy | ±0.1 pH; ±0.01 pH; ±0.002 pH ±1 LSD |
| ORP Range | ±2000 mV |
| ORP Resolution | 0.1 mV |
| ORP Accuracy | ±0.2 mV ±1 LSD |
| ISE Range | 1 x 10-6 to 9.99 x 1010 concentration |
| ISE Resolution | 1; 0.1; 0.01; 0.001 concentration |
| ISE Accuracy | ±0.5% (monovalent ions); ±1% (divalent ions) |
| Conductivity Range | 0.000 to 9.999 µS/cm; 10.00 to 99.99 µS/cm; 100.0 to 999.9 µS/cm; 1.000 to 9.999 mS/cm; 10.00 to 99.99 mS/cm; 100.0 to 999.9 mS/cm; 1000 mS/cm |
| Conductivity Resolution | 0.001 µS/cm; 0.01 µS/cm; 0.1 µS/cm; 0.001 mS/cm; 0.01 mS/cm; 0.1 mS/cm |
| Conductivity Accuracy | ±1% of reading (±0.01 µS/cm) |
| Resistivity Range | 1.0 to 99.9 Ohms x cm; 100 to 999 Ohms x cm; 1.00 to 9.99 kOhms x cm; 10.0 to 99.9 kOhms x cm; 100 to 999 kOhms x cm; 1.00 to 9.99 MOhms x cm; 10.0 to 100.0 MOhms x cm |
| Resistivity Resolution | 0.1 Ohms x cm; 1 Ohms x cm; 0.01 kOhms x cm; 0.1 kOhms x cm; 1 kOhms x cm; 0.01 MOhms x cm; 0.1 MOhms x cm |
| Resistivity Accuracy | ±2% of reading (±1 Ohm x cm) |
| TDS Range | 0.000 to 9.999 ppm; 10.00 to 99.99 ppm; 100.0 to 999.9 ppm; 1.000 to 9.999 ppt; 10.00 to 99.99 ppt; 100.0 to 400.0 ppt actual TDS (with 1.00 factor) |
| TDS Resolution | 0.001 ppm; 0.01 ppm; 0.1 ppm; 0.001 ppt; 0.01 ppt; 0.1 ppt |
| TDS Accuracy | ±1% of reading (±0.01 ppm) |
| Salinity Range | practical scale: 0.00 to 42.00 psu; natural sea water scale: 0.00 to 80.00 ppt; percent scale: 0.0 to 400.0% |
| Salinity Resolution | 0.01 for practical scale/natural sea water scale; 0.1% for percent scale |
| Salinity Accuracy | ±1% of reading |
| Temperature Range | -20.0 to 120°C; -4.0 to 248.0°F; 253.15 to 393.15K |
| Temperature Range | 0.1°C; 0.1°F; 0.1K |
| Temperature Accuracy | ±0.2°C; ±0.4°F; ±0.2K (without probe) |
| Other Features | Five point automatic pH calibration with pH Calibration Check, Large memory (upto 10,000 records) |
| Launch Date | 2013 |