Description 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.Features:Pen cover design, easy to carry, not easy to damage, no loss of sensitivity.Portable water quality analyzer, home use, hospital natatorium, water plant laboratory, aquaculture.High definition display screen, quick and simple accurate measurement, large digital display more clearly.Manual one key automatic calibration mode, solve the problem that the long storage time of automatic calibration can not be accurately calibrated.The top adopts nice sealing process to prevent energy consumption in wet environment.PH pen is glass electrode probe, heat and cold resistant, high sensitivity.TDSEC pen is titanium alloy probe, high hardness, anti-rust and oxidation resistance.Specifications:Type: Single Yellow PH Pen White TDS Pen Yellow PH Pen White TDS Pen PH Pen Blue TDS Pen Yellow PH Pen Blue TDS Pen White PH Pen (optional)Measuring Project: PH, TDSECTDS Measure Range: 0-9990ppmTDS Tempreture Measure Range: 0.1-80 / 32-176TDS Error: 2%TDS Cell: 1 * CR2032 Button Cell, 3V 240mAh (included)TDS Probe: Titanium AlloyPH Measure Range: 0-14PH Accuracy: 0.01PH Error: 0.05PH Cell: 2 * LR44 Button Cell, 3V 240mAh (included)PH Probe: Glass ElectrodePackage Weigth: 106g / 3.74ounces 190g / 6.70ouncesPackage Size: 150 * 30 * 20mm / 5.91 * 1.18 * 0.79in 200 * 110 * 20mm / 7.87 * 4.33 * 0.79inPacking List:1 * PH Test Pen1 * TDSEC Test Pen6 * Corrective Powder2 * Instruction Book