The Thermo Scientific Orion Star A321 pH Portable Meter is the top choice for advanced pH measurements on location. Get the information you need quickly and easily from the large, backlit graphic LCD display. Informative display shows pH/mV/RmV and temperature along with electrode status, time, date, sample ID, user ID and calibration points. Advanced features such as stability and averaging options provide additional options allowing for laboratory accuracy everywhere you need it.
pH-range | -2.000 to 20.000 |
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pH-resolution | Selectable 0.1, 0.01, 0.001 |
pH-relative accuracy | ±0.002 |
Calibration Points | Up to 5 |
Calibration Editing | Yes |
mV/Rel mV/ORP Range | ±2000.0 mV |
mV/Rel mV/ORP Resolution | 0.1 |
mV Relative Accuracy | ±0.2 mV or ±0.05% or reading, whichever is greater |
EH ORP Mode | Yes |
Temperature Range | -5 to 105 °C, 23 to 221 °F |
Temperature Resolution | 0.1 |
Temperature Relative Accuracy | ±0.1 |
Temperature Offset Calibration | 1 point |
Number of Datalogs | 5000 with time and date stamp |
Log Function | Manual, ready (includes AUTO-READ™), timed |
pH Electrode Input | BNC, reference pin |
ATC Probe Input | 8-pin mini-DIN |
Output Interfaces | RS232, USB |
Power | Universal AC Adapter (100-240 VAC) optional or 4 AA batteries included |
Batter Life | 800 hrs |
Electrodes Supplied | 8107UWMMD Orion ROSS Triode 3-in-1 pH/ATC probe |