PH-902 PH计，笔式防水型pH计，高精度迷你笔式全防水PH计，笔式迷你酸度计：
测量范围： 0.00—14.00 pH ,
分辨率： 0.01 pH,
精度： ≤±0.03 pH,
探头： 可换
温度范围： 5--50 ℃ (ATC)
标定： 二点定位校准标定，6.86pH 及 4.01pH (or 7.0pH 及 4.01pH)
特点： 低功耗；电池电压过低对测量精度无影响；自动关机。
电池： DC 4 x 1.5V
PH-902 Pen pH Testr WP
Range: 0.00—14.00 pH,
Resolution: 0.01 pH,
Accuracy: ≤±0.03 pH,
Temp. C: 5—50℃, (ATC)
Calibration: Two-point at 6.86pH and 4.01pH (or 7.0pH and 4.01pH)
Features: Automatic switch-off function: After 10 minutes without pushing buttons, the meter will be switched off automatically.
Low battery alarm: If the batteries are low, the display will flash, to warn user to change battery.
As long as there is any display, the accuracy is guaranteed.
Battery Life: DC 4x 1.5V
Flug:Changeable electrode