PH Meter, PH Tester for Swimming Pools, 4-in-1 PH Meter, Electronic TDS Meter, Water Quality and pH Test for Drinking Aquariums, Hydroponics, Swimming Pools

4-in-1 PH Tester: A very complete kit for checking the quality of your water, from the tap to the treatment system, including the aquarium or swimming pool. TDS/PH testers are small and lightweight, like a pen; pH meters for drinking water, beverages, aquariums, hydroponics, and swimming pools. Ease of Use: TDS water freezes the measurement result when you press the "HOLD" button and turns off automatically after a few minutes of non-use. These 2-in-1 pH and TDS meters are also ideal for home testing. High Accuracy: The pH meter readings range from 0.00 to 14.00 (PH), while the digital EC and TDS meter readings range from 0.00 to 14.00 (PH). Use a digital meter to get precise readings instead of comparing color with pH test paper. This avoids inaccuracies due to varying light. This is also useful for people with poor color. Easy calibration: The pH tester automatically calibrates to three points (calibration at 6.86 and 4.01 points). No tools are needed; simply immerse the pH meter electrode in the solution. Press "ON/OFF" to open the electronic pH meter, shake it gently, and wait a few seconds for the readings to stabilize.