PH-903筆式防水pH 計(jì) (New) 測(cè)量范圍： 0.00—14.00 pH , 分辨率： 0.01 pH, 精度： ≤±0.03pH, 溫度范圍： 5--50 ℃ (全自動(dòng)溫度補(bǔ)償) 標(biāo)定： 二點(diǎn)定位校準(zhǔn)標(biāo)定，6.86pH and 4.01pH(or 7.0pH and 4.01pH) 特點(diǎn)： 低功耗；電池電壓過(guò)低對(duì)測(cè)量精度無(wú)影響；自動(dòng)關(guān)機(jī)。 PH-903 Pen pH Tester WR (New) Range: 0.00—14.00 pH, Resolution: 0.01 pH, Accuracy: ≤±0.03pH, 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：As long as there is any display, the accuracy is guaranteed. Battery Life: DC 4x 1.5V Flug: Fixed electrode