3-in-1 Tds Ec Temperature Meter. FEATURES: The Great Thing About This Meter is That It Works for Almost Any Type of Water Testing You Have in Mind: Private Water Sources Like Wells RO, DI, or Distillation Unit Effectiveness Nutrient Levels in Hydroponic Setups Aquariums or Fish Tanks Swimming Pools, Hot Tubs, and Spas Many More PH Meter SPECIFICATIONS: Measure Range: 0.00- 16.00PH Resolution: 0.01PH Accuracy: ±0.01 PH Power Supply: 2*1.5V (LR44 Button Cell) (Included) Operating Temperature: 0°F - 140°F Dimension: 155mm* 31mm * 18mm / 6.10�×1.22�×0.70� Weight: 50g / 1.76oz FEATURES: Automatic Temperature Compensation (ATC) One Button (CAL) Calibrate the PH Meter Automatic Shut-off After 5minutes with Inactive Calibration: A. Dissolve PH Buffer Powder in 250ml of Distilled Water. B. Turn on PH Meter and Clean the Electrode in Distilled Water, then Immerse the Electrode in the PH Standard Solution. C. Press �CAL� Button, Make the Reading Equal to Standard Buffer Solution PH 6.86, 4.01 or 9.18. D. Clean Electrode with Distilled Water and Dry It. TDS Meter Specifications: Measurement Range: Conductivity (EC): 0 - 9 999µs/cm TDS: 0 - 9 999ppm (Parts Per Million) Fahrenheit: 32.0 - 176.0°F Degree Celsius: 0.1 - 80.0°C Accuracy: ±2% Power Supply: 1*3V (Cr2032 Button Cell) (Included) Operating Temperature: 32 - 122 °F Dimension: 154mm*30mm*14mm / 6.06�×1.18�×0.55� Net Weight: 55g / 1.94oz FEATURES: Automatic Temperature Compensation (ATC) One Button (HOLD) Lock the Testing Result One Button (SHIFT) Switch the 4 Display Modes: TDS - Ppm & °C, EC - µs/cm & °C, TDS - Ppm & °F, EC - µs/cm & °F Automatic Shut-off After 5minutes with Inactive Non-Calibration Required: TDS Meter Had Been Calibrated in Producing How to Measure Prepare Remove the Protective Cap from the Handheld Meter. Keep Reading Stabilize Press the ON/OFF Button to Turn on the Unit. Dip the Electrode in the Target Solution, Making Sure the Whole Electrode is Submerged. Stir the Solution Gently and Wait for the Value to Stabilize. The LCD Screen Will Display the Reading. How to Store Rinse the Electrode with Distilled Water and Let It Dry. . We are an international seller, your order will be shipped from abroad so please allow the necessary time of minimum 14 working days for delivery right now depending on where you ship to, due to ongoing delays in postal deliveries globally.