TDS meter: 3-in-1 TDS, EC, and Temperature Meter. This 3-in-1 professional TDS meter is useful for assessing water purity and is a compact water testing device that fits in your pocket. This accurate and reliable meter is suitable for various water quality testing applications, including water purification, wastewater regulation, aquaculture, hydroponics, laboratory and scientific testing, pools and spas, ecological testing, water treatment, and more. A suitable soil environment is essential for healthy plant growth. Providing optimal soil conditions, proper water, sunlight, and nutrients helps plants thrive. This tester allows for a better understanding of your soil, enabling improved plant care. It helps avoid common issues such as overwatering or underwatering, planting in areas with inadequate light, and identifying potential soil pH imbalances. pH Meter: How to use? Step 1: Remove the protective cap Step 2: Clean the electrode with distilled water and dry it Step 3: Press the ON/OFF button to turn on the meter Step 4: Immerse the pH electrode into the solution to be tested Step 5: Stir gently and wait for the reading to stabilize Step 6: After testing, rinse the electrode with distilled water and turn off the meter by pressing the ON/OFF button Product Features: pH Measurement Range: 0.00 - 14.00 pH Resolution: 0.01 pH pH Accuracy: ±0.05 pH Calibration: Two-point automatic calibration Power Supply: 2 x 1.5V LR44 batteries Weight: 50 g Temperature Range: 0.1 - 80.0 °C Conductivity Range: 0 - 9990 µS/cm TDS Range: 0 - 9990 ppm TDS Accuracy: ±2% Battery: 1 x 3V CR2032 (included) Dimensions: 154 x 30 x 14 mm Material: ABS Color: Yellow + Blue + Green Package Contents: 1 x pH Meter (yellow) 1 x TDS & EC Meter (blue) 1 x Soil Tester Kit (green) Note: The package includes only the items listed above. Other products are not included. Lighting and display differences may cause slight variations in the color of the item shown in the image compared to the actual product. Measurement may vary by ±1-3 cm due to manual measurement.