Portable water quality analyzer, high definition display screen, manual one key automatic calibration mode, the top adopts nice sealing process to prevent energy consumption in wet environment, accurate measurement, simple and quick. _x000D_ _x000D_ _x000D_ _x000D_Specifications: _x000D_ _x000D_Type: _x000D_ _x000D_ Single Yellow PH Pen _x000D_ _x000D_ White TDS Pen & Yellow PH Pen _x000D_ _x000D_ White TDS Pen & PH Pen _x000D_ _x000D_ Blue TDS Pen & Yellow PH Pen _x000D_ _x000D_ Blue TDS Pen & White PH Pen (optional) _x000D_ _x000D_Measuring Project: PH, TDS&EC _x000D_ _x000D_TDS Measure Range: 0-9990ppm _x000D_ _x000D_TDS Tempreture Measure Range: 0.1-80 / 32-176 _x000D_ _x000D_TDS Error: ±2% _x000D_ _x000D_TDS Cell: 1 * CR2032 Button Cell, 3V 240mAh (included) _x000D_ _x000D_TDS Probe: Titanium Alloy _x000D_ _x000D_PH Measure Range: 0-14 _x000D_ _x000D_PH Accuracy: 0.01 _x000D_ _x000D_PH Error: ±0.05 _x000D_ _x000D_PH Cell: 2 * LR44 Button Cell, 3V 240mAh (included) _x000D_ _x000D_PH Probe: Glass Electrode _x000D_ _x000D_Package Weigth: _x000D_ _x000D_ 106g / 3.74ounces _x000D_ _x000D_ 190g / 6.70ounces _x000D_ _x000D_Package Size: _x000D_ _x000D_ 150 * 30 * 20mm / 5.91 * 1.18 * 0.79in _x000D_ _x000D_ 200 * 110 * 20mm / 7.87 * 4.33 * 0.79in _x000D_ _x000D_ _x000D_ _x000D_Packing List: _x000D_ _x000D_1 * PH Test Pen _x000D_ _x000D_1 * TDS&EC Test Pen _x000D_ _x000D_6 * Corrective Powder _x000D_ _x000D_2 * Instruction Book