<b>Your 1# Choice to Know Water Quality</b><br><br>The VIVOSUN TDS EC PH Meter Set is a professional water quality test meter.<br><br><b>PH Meter Specifications: </b><br>Measure Range : 0.00 - 14.00 pH<br>Resolution : 0.01 pH<br>Accuracy : ± 0.05 pH<br>Calibration: Two Points Automatic Calibration Button<br>Power Supply: 2 x 1.5V LR44 Button Battery (keep using more than 500 hours)<br>Dimension:155mm*31mm*18mm<br>Weight:50g<br><br><b>3-in1 TDS EC Temperature Meter Specifications:</b><br>Lock function - makes it easy to read and record, the instrument will lock the reading result.<br>After the numerically result gets stable, press HOLD button then remove the meter out of test solution to read.<br>4 Display modes: press SHIFT button: TDS - ppm & °C, EC - µs/cm & °C, TDS - ppm & °F, EC - µs/cm & °F.<br>5 minute Auto Shut Off feature, so battery won't run down.<br>Measurement Range<br>Conductivity: 0 - 9990 µs/cm<br>TDS: 0 - 9990 ppm (parts per million)<br>Degrees Celsius: 1.0 - 80.0°C<br>Fahrenheit: 32.0 - 176.0°F<br>Accuracy: ± 2%<br>Net weight: 51g<br>Size: 154 x 30 x 14 mm<br>Tips: TDS = Total Dissolved Solids, which is any salt, metal or mineral in the water.<br><br>Package Includes:<br>1 x PH Meter<br>1 x 3-in-1 TDS EC Temperature Meter<br>2 x Calibration Packet<br>2 x Carrying Case<br>2 x User Manual