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Highlight - TDS & EC Meter All Ready Stock : 100% Brand New and High Quality The digital TDS water meter is ideal for testing applications such as hydroponics and gardening, pools and spas, aquariums and reef tanks, water ionizers, water filter, drinking water and more. Measurement Range: 0-9990 ppm , 1 ppm Resolution, +/- 2% Readout Accuracy. Temperature Button: Test water temperature, 32 - 176 F degrees, 1 F degree resolution. Hold Function: saves measurements for convenient reading and recording. TDS Water Meter is ideal for testing applications ideal drinking water, Water Filter, carbon filters, spring water, hard water, average tap water, refrigerator water filter, water filter, brita filter, reverse osmosis, reverse osmosis filter. Auto-off function. Turns off meter after 5 minutes of non-use to conserve batteries. The smallest and lightest meter available on the market. Highly efficient and accurate to its advanced microprocessor technology. TDS meter: measurement range of 0-9990ppm and 2% highly accurate, quick readings. Data Hold Function: hold the measurement to view it out of the water - TDS meter only. Great for all home and laboratory testing applications including aquariums, swimming pools. Comes with carrying case; lightweight, for portability and convenience. What is in the box: 1 x Digital TDS Tester with Free Storage Bag Specification - TDS & EC Conductivity: 0-9900us/cm TDS: 0-9999ppm Celsius: 0.1-80.0 ° C Fahrenheit: 32.0-176.0°F Accuracy: ±2% Size: 154 × 30 × 14 (mm) Highlight - pH Meter This pH meter the perfect device for your testing of the acidity or alkalinity of liquids. It is very easy to use - just immerse the electrode to get accurate, fast readings. PH meter: full measurement range of pH 0-14, 0.1 pH range of error; reliable and quick readings. The smallest and lightest meter available on the market. Great for all home and laboratory testing applications including aquariums, swimming pools. Comes with carrying case; lightweight, handheld design for portability and convenience. 3 month for manufacturing defects only What is in the box: 1 x pH Meter , 2 x pH buffer powder, 1 x storage box Specification - pH Mater Measure Range: 0.00-14.00pH Resolution: 0.01 pH Accuracy: +/-0.01 pH Batteries: 2X 1.5V LR44 Operation Temperature: 0° C - 60° C Calibration: Three points automatic calibration (only 6.86 point calibration: the accuracy is 0.1pH) Size: 155 × 31 × 18 (mm)