5-in-1 pH Meter: This is a digital water quality tester kit with pH meter, TDS meter and EC/salinity/temperature test functions, which is fully functional and can meet your different needs. The VA backlit display can provide you with clear readings even at night. High Precision: This water quality tester is highly accurate and reliable. pH resolution 0.01pH, accuracy 0.05pH. TDS range 0-9999ppm, resolution 1ppm, accuracy 2%. EC range 0-9999S/cm, resolution 1S/cm, accuracy 2%. Salinity range 0.01%-10%, resolution 0.01, accuracy 5%. Temperature range 0.1-60/32.1-140. Wide range of uses: This meter can be used in occasions. It can be used in swimming pools, laboratories, aquariums, hydroponics, spas, kitchens, drinking water, allowing you to enjoy a better and healthier life. Warm Tips: Before use, the probe should be soaked in water for two minutes to activate the probe before use or calibration. Put on the protective cover immediately after use to avoid the test electrode from being exposed to the air for a long time and drying out. If the electrode is dry, put the electrode in distilled water to keep it moist. Easy to use: 1. Remove the protective cover; 2. the "ON/OFF" key to turn on the meter; 3. Immerse the meter electrode in the test solution (the immersion depth cannot exceed the immersion line); 4. Stir gently and wait for the reading to stabilize; 5. If you need to test the temperature, long the "HOLD/TEMP" button to get the temperature reading; 6. When finished, clean the electrode with distilled water and the "ON/OFF" key to turn off the meter; 7. Replace the protective cover after use. Note:Due to different factory batches, slight differences in appearance colors not affect the use. Colour:As Shown Material:Plastic Package Contents: 1 * Digital PH Meter 1 * USB Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.