PH-901 Pen pHTestr WP
Range: 0.00-14.00 pH,
Resolution: 0.01 pH,
Accuracy: ±0.03 pH,
Temp. C: 5-50°C, (ATC)
Calibration: Two-point at 6.86pH and 4.01pH
Battery Life: DC 4 x 1.5V