5 in 1 Water Quality MeterThe tester has the functions of monitoring TDS, PH, ORP, EC meter and temperature measurement. With this handy PH tester, you can finish your job faster and easier than ever! Easy-to-use digital PH meterJust remove the protective cap from the PH pen and immerse the electrode of the ph water tester into the solution and press the button to measure. Don't worry about seeing the value displayed when the light is insufficient. The tester has a backlit LCD display to help you see the measurement clearly in any situation. High AccuracyThe high precision algorithm chip and electrode of our digital pH tester from water guarantee a precise and fast response. When the measured value is stable, just press the HOLD/TEMP key to lock the measured value and pull it out to view, which is really simple. Automatic temperature compensation Temperature can affect levels of reading, the digital pH meter for hydroponics has an even better range from 0C to 60C (32F to 140F), automatic temperature compensation can ensure that you get the best reading, so you can test with confidence in any environment. Multi-Purpose TestingThe portable water quality meter can be taken anywhere to measure water quality, such as hydroponics, drinking water, tap water, RO system water, aquarium, sea water, swimming pool water, etc.