Check the listing for details. LED Multiparameter Ph Meter Automatic Calibration Acidity Meter Monitor Lab. Condition: New, Made in China. Listed at 312.51 USD. Specification: Model: P901 Display: 6.5 inch LED screen Display parameters: pH, mV, temperature, time pH measurement range: -2.00 to 19.99 pH pH resolution: 0.1/0.01 pH pH relative accuracy: ±0.02 pH Stability ±0.01 pH/3h Input current: ≤2×10-12 A Input impedance: ≥1×1012 Ω mV measurement range: -1999～1999 mV mV resolution: 1mV mV relative accuracy: ±0.1%FS Temperature measurement range: 0-100℃ Temperature resolution: 0.1℃ Temperature relative accuracy: ±0.5℃ Temperature compensation: manual/automatic (0-100)℃ Calibration: Automatic (3-point calibration) GLP standard: in line with Buffer: Europe/USA/NIST. Erope/USA/NIST Data storage: 2000 groups Communication interface: USB2.0, USB micro interface, Bluetooth wireless (optional) Operating conditions: Temperature: 5-40 degrees Humidity: 5-85.