We've used this in our small batch cosmetics manufacturing lab for a few years and now that we're moving into a new space we no longer need it. Reach out if you want photos or video of it working.
Here's info from the manufacturer:
pH Range: pH: -2.000 to 16.000, -2.00 to 16.00
pH Resolution: 0.001 pH, 0.01 pH
pH Accuracy: (@25°C/77°F) ±0.01 pH, ±0.002 pH
pH Temperature Compensation: Automatic -5 to 100˚ C (23 to 212˚ F) (using integral temperature sensor)
pH Calibration: Automatic, up to 3 points (5 points*) calibration, 5 standard (7 standard*) buffers available (1.68*, 4.01 or 3.00, 6.86, 7.01, 9.18, 10.01, 12.45*) and 2 custom buffers*
ORP Range: ±2000 mV
ORP Resolution: 0.1 mV
ORP Accuracy: ±0.2 mV (±999.9 mV) ±1 mV (±2000 mV)
Temperature Range: -20.0 to 120.0 ˚C, -4.0 to 248.0 °F
Temperature Resolution: 0.1 °C, 0.1 °F
Temperature Accuracy: ±0.5 °C, ±0.9 °F
pH Electrode: HI11310 glass body refillable pH electrode with temperature sensor
Power Supply: 5 VDC adapter (included)
Environment: 0 to 50°C (32 to 122°F), RH max 95% non-condensing
Dimensions: 202 x 140 x 12.7mm (8in. x 5.5in. x 0.5in.)
edge® pH electrodes are highly advanced, featuring a built-in microchip that stores calibration information that is automatically retrieved by edge once the electrode is plugged in. With a digital electrode, it is possible to change electrodes without having to recalibrate since the calibration information is stored in the pH electrode and not the pH meter. This allows flexibility for the user that measures pH with more than one electrode. (ORP electrode sold separately).
Hanna™s exclusive CAL Check feature analyses the pH electrode response in the pH buffers during the calibration process to alert the user of potential problems such as contaminated buffer and clean electrode. After calibration, indicators for probe condition and response time are displayed on the measurement screen.
When used with Hanna™s electrodes equipped with a matching pin, edge® constantly checks the impedance of the pH measuring electrode to notify you in real time in the event of glass breakage. During calibration, Sensor Check checks the state of the junction. The reference junction is also evaluated and reported on the display.