PH-900A Mini pH Tester
Range: 0.00—14.00 pH,
Resolution: 0.10 pH,
Accuracy: ±0.1 pH,
Temp. C: 5—50℃, (ATC)
Calibration: Two-point at 6.86pH and 4.01pH (or 7.00pH and 4.01pH)
Low battery:As long as there is any display, the accuracy is guaranteed.
Battery Life: DC 4 x 1.5V