Benchtop Meters
Hanna Instruments Calibration Check™ pH Meters
Automatically assess the condition and response time of the electrode every time you calibrate the meter!
New advanced benchtop meters from Hanna Instruments feature a graphic display to show if electrode needs cleaning, or buffers are contaminated. Other features include datalogging with recall (HI 221, 100 points; HI 223, 500 points); automatic one or two point calibration; automatic temperature compensation; and calibration alarm with recall of last calibration date and data.
Hanna Instruments Calibration Check™ pH Meters
Automatically assess the condition and response time of the electrode every time you calibrate the meter!
New advanced benchtop meters from Hanna Instruments feature a graphic display to show if electrode needs cleaning, or buffers are contaminated. Other features include datalogging with recall (HI 221, 100 points; HI 223, 500 points); automatic one or two point calibration; automatic temperature compensation; and calibration alarm with recall of last calibration date and data.
Meters are supplied complete with refillable glass body electrode, SS temperature probe, electrode holder, 4 and 7 buffer solutions and electrode refill solution.
SPECIFICATIONS
| Range | Resolution | Accuracy | |
| HI 221 pH Meter | |||
| pH: | -2 to 16 | 0.01 | +/-0.01 |
| mV: | +/-699.9; +/-2000 | 0.1;1 | +/-0.2; +/-1 |
| Temperature: | -20 to 120°C | 0.1°C | +/-0.4°C |
| HI 223 PH Meter | |||
| pH: | -2 to 16 | 0.01; 0.001 | +/-0.01; +/-0.002 |
| mV: | +/-999.9; +/-2000 | 0.1;1 | +/-0.5; +/-1 |
| Temperature: | 20 to 120°C | 0.1°C | +/-0.4°C |
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