General description The 2-Pack Water Quality Tester is a versatile electronic device designed to measure pH, TDS (Total Dissolved Solids), EC (Electrical Conductivity), and temperature in various water types. It is suitable for testing tap water, filtered water, distilled water, bottled water, well water, and fresh water. This high-precision tester is ideal for applications in water purification, aquaculture, hydroponics, pools and spas, and more. With a fast and reliable operation, users can obtain results in seconds without the need for calibration or setup. Technical specifications Measurement Range: 0.00 - 14.00 pH Resolution: 0.01 pH Accuracy: ±0.01 pH Automatic Temperature Compensation: 0 - 60 °C / 32 - 140 °F Battery: 2 x 1.5 V LR44 (included) Dimensions (pH Meter): 15.5 x 3 x 1.5 cm / 6.10 x 1.22 x 0.71 inches Weight (pH Meter): 50 g / 0.11 lb Conductivity Measuring Range: 0 -- 9999 µs/cm TDS Measuring Range: 0-9999 ppm TDS Accuracy: 2% Battery (TDS EC Meter): 3V CR2032