Top 10 Best water ph tester digital in 2026

Last Updated - 6/8/2026

🏆Best Choice

MEXYBE

2025 All-New 4 in 1 Tds Meter Digital Water Tester - Accurate and Reliable TDS EC & Temp(°C,°F) Meter - 0-9990ppm - Professional Testing for Drinking Water, RO/DI System, Aquariums etc

9.8

ChoiceComparer.com Score

9.8

/ 10

Outstanding

Main highlights

•Reliable Brand: MEXYBE was founded with a simple yet important mission: to provide everyone with a accurate and reliable way to test their water quality. We believe that access to clean and safe drinking water is a basic human right, and our tds meter digital water tester is one professional way that can help people achieve that. We are committed to providing high-quality products and excellent customer service. Join us in our mission to make clean and safe water accessible to everyone
•Accurate and Reliable Results: Tired of getting unreliable readings from other water testers? Look no further. The MEXYBE 2025 ALL-NEW water quality tester features a high-precision chip and a premium titanium alloy probe, ensuring accurate and reliable results every time. Equipped with cutting-edge technology and advanced features, it's the ultimate choice for precise water testing. So why wait? Experience dependable testing performance for you and your family today
•Multifunctional (4 in 1) and 5 Upgraded: Professional TDS (Total Dissolved Solids), EC (Electrical Conductivity), Temperature (Degree Centigrade) and Temperature (Fahrenheit) Meter 4 in 1. Upgraded with big backlit LCD for easier reading, auto-lock function for easier use, factory calibrated and hold function for direct use and auto-0ff in 2 minutes to conserve battery. These enhancements make it a user-friendly tds meter digital water tester for a variety of applications
•Two User-Friendly Features:1. 25% Larger Backlit LCD: The MEXYBE 2025 4-in-1 water quality tester has a screen that's 25% bigger than older 3 in 1 models the market, making it easier to read for everyone, including seniors and children. 2. Convenient TDS Chart: A colorful TDS chart is placed on the back of the tester and in the user guide, so you can quickly understand PPM values without searching online—saving you time with every test
•Multipurpose Tds Tester: Test the purity of drinking water to ensure it's safe and healthy, monitor if Reverse Osmosis (RO)/Deionization(DI) System works properly, whether filter need replaced, maintenance aquarium, hydroponics(test nutrients), well, pool, hot tub, spa and testing tap water, bottle water etc
•Give the Gift of Health: Looking for the perfect gift for your family and friends? Look no further than our water testing kit for drinking water! Our easy-to-use device lets you quickly and accurately test the purity of any water source, giving you peace of mind that you're drinking clean and healthy water. Whether you're shopping for a health-conscious loved one, a new homeowner, or someone who enjoys outdoor activities like camping and hiking, our tds water test kit makes the perfect gift
•Experience our live customer support: a dedicated team of water quality experts ready to offer rapid and efficient responses round the clock through live chat and email. We are committed to taking our customers' feedback seriously, as our sole aim is to deliver products and services that hold genuine value for you
•💖 Better water, better life. Experience the difference of pure and healthy water with your FAMILY by MEXYBE 2025 all-new 4 in 1 tds meter digital water tester!

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$10.99

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VIVOSUN

VIVOSUN Digital pH and TDS Meter Kits, 0.01pH High Accuracy Pen Type pH Meter ± 2% Readout Accuracy 3-in-1 TDS EC Temperature Meter for Hydroponics, Pool and Aquarium, Yellow Blue, UL Certified

9.7

ChoiceComparer.com Score

9.7

/ 10

Outstanding

Main highlights

•Application: Great for all home and laboratory TDS & pH testing applications including aquariums, swimming pools
•PH Meter: Full measurement range of pH 0 - 14, reliable and quick readings
•3-in-1 TDS Meter: Measurement Range 0-9990ppm, 0-9990µs/cm; Accuracy ± 2%, 0.1- 80.0°C, 32.0-176.0°F; Note: This meter can't test sea water
•Features: Comes with protective case; Lightweight, handheld design for portability and convenience
•Included: PH meter, 3-in-1 TDS meter, 3 calibration buffers

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$13.99

$18.99

-26%

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Ruolan

PH Meter for Water Hydroponics Digital PH Tester Pen 0.01 High Accuracy Pocket Size with 0-14 PH Measurement Range for Household Drinking, Pool and Aquarium

9.5

ChoiceComparer.com Score

9.5

/ 10

Outstanding

Main highlights

•【How to use calibration】Press CAL for 5 seconds to enter the calibration mode, press in turn to select the powders corresponding to 6.86, 4, and 9.18 to complete the calibration.
•【Mini Size】The mini size ph meter we designed allows you to easily put it in your pocket, so you can take measurements anytime, anywhere. It can help you test it whether you take it to the pool, on a trip, to the beach or camping.
•【Family Essentials】As a tool to improve the quality of life. Can be used to test drinking water, swimming pools, PH balance in aquarium, RO system, spa or hydroponics. Basically all the environments that need to test PH value can use this tester to get accurate data.
•【Easy to use】turn on the switch,put the probe into the water and stir (make the small glass ball fully contact the liquid) and the value can be read when the value is stable.
•【Automatic temperature compensation】There is no need to care about the temperature of the liquid being measured. The PH meter has an automatic temperature compensation function, which can be adjusted according to the water temperature and water quality.

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$7.49

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VARIFY

Instant 4-in-1 TDS Meter Digital Water Tester for Drinking Water | Accurate 0–9990 PPM EC & Temp Readings | Ideal for RO Systems, Aquariums, Pools – Built for Professionals, Easy for Anyone

9.4

ChoiceComparer.com Score

9.4

/ 10

Excellent

Main highlights

•ACCURATE 4-in-1 WATER TESTING – Test all water sources with lab-grade precision. Measures TDS, EC, and temperature in °C/°F with one compact meter. Get peace of mind for drinking water, aquariums, RO systems, and more.
•INSTANT 3-SECOND RESULTS – See your water quality fast with instant digital readings in just 3 seconds. One-button operation and a clear backlit display make testing easy for anyone — no setup or calibration required.
•BUILT TO LAST, EASY FOR ANYONE – Built with a professional titanium sensor, auto-off feature, and durable design. Whether you're a homeowner or pro, this TDS tester delivers reliable results with zero hassle.
•BONUS GUIDE TO UNDERSTAND YOUR WATER – Includes a downloadable TDS interpretation guide to help you make sense of your results. Understand what’s safe, what’s not, and how to take action for cleaner, healthier water.
•COMPLETE KIT WITH EXTRA BATTERIES – Everything you need in one box: TDS meter, extra batteries, and a quick-start chart. Test water quality instantly — no extra purchases required.
•TRUSTED USA BRAND WITH GUARANTEE – Join over 1 million happy customers worldwide. Backed by a money-back guarantee and responsive USA-based support, and every purchase helps support clean water projects globally.

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$9.99

$12.97

-23%

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Apera Instruments

APERA INSTRUMENTS AI209 Value Series PH20 Waterproof pH Tester Kit, ±0.1 pH Accuracy

9.2

ChoiceComparer.com Score

9.2

/ 10

Excellent

Main highlights

•Easy auto. calibration with buffer recognition; auto. temp. compensation (ATC) ensures accuracy in various temperatures (32 to 122F)
•Backed by Apera quality pH sensor with low impedance, ensuring high response rate
•Comes in a rugged carrying case with pH 4&7 buffers and a lanyard
•Auto recognition of stable values improves consistency, so you don't have to guess when to manually hold measurement
•Up to 2000 hours' continuous operation, powered by AAA batteries

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$50.22

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Ammsia

pH Meter & TDS Meter, 0.01 High Precision Water Quality Tester TDS/pH/Temp 3-in-1 pH Tester for Water, 0-14 pH Test Range, Easy to Read, Calibrate, PPM Meter for Drinking Water, Wine, Food and Pool

9.1

ChoiceComparer.com Score

9.1

/ 10

Excellent

Main highlights

•3-IN-1 TDS/PH METER – This upgraded digital pH meter combines a TDS meter, pH tester, and thermometer in one compact device, accurat1xely measuring pH, TDS, and temperature at the same time. This versatile water tester provides a complete water quality analysis to help ensure clean, safe, and healthy water for drinking, cooking, or gardening.
•EASY TO READ & USE – Designed for user convenience, this pH test kit delivers results within seconds. The bright green backlit LCD displays readings clearly, even in low light, while the straightforward operation makes this water test kit beginner-friendly and ready for quick daily testing.
•HIGH ACCURACY WATER METER – Equipped with a high-sensitivity probe, this TDS tester delivers quick, reliable results. With a measurement range of 0–14.0 pH and a resolution of 0.01, this pH pen ensures precise readings for your water test kit, whether for home, lab, or industrial use.
•AUTOMATIC CALIBRATION – This digital pH meter with ppm meter function supports automatic calibration and includes calibration powders (pH 4.00 / pH 6.86 / pH 9.18). Just press the calibration button, and the water meter will automatically recognize the correct solution—guaranteeing accurate results every time.
•STABLE TEST RESULTS – Built-in Automatic Temperature Compensation (ATC) automatically adjusts readings based on water temperature and quality. This pH meter for food and water delivers accurate results from 32°F–140°F (0°C–60°C), solving inaccuracies caused by temperature changes.
•STABLE TEST RESULTS – Built-in Automatic Temperature Compensation (ATC) automatically adjusts readings based on water temperature and quality. This pH meter for food and water delivers accurate results from 32°F–140°F (0°C–60°C), solving inaccuracies caused by temperature changes.

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$26.99

$29.99

-10%

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Divolight

Divolight Digital PH Meter - High Accuracy Digital Water Quality Tester with 0-14 PH Measurement Range for Household Drinking, Pool and Aquarium with ATC

8.9

ChoiceComparer.com Score

8.9

/ 10

Great

Main highlights

•【Aplication】As a tool to improve the quality of life. Can be used to test drinking water, swimming pools, PH balance in an aquarium, RO system, spa, or hydroponics. All the environments that need to test PH values can use this tester to get accurate data.
•【How to use calibration】Place the tester in a calibration solution. Press CAL for 3 seconds to enter the calibration mode, and press in turn to select the powders corresponding to 6.86, 4.00, and 9.18 to complete the calibration.
•【Easy to use】turn on the switch, place the probe into the water, and stir (make the small glass ball fully contact the liquid) and the value can be read when the value is stable.
•【Automatic Temperature Compensation-ATC】There is no need to care about the temperature of the liquid being measured. The PH meter has an automatic temperature compensation function.
•【Mini Size】The mini size of the pH meter allows you to easily put it in your pocket, so you can take measurements anytime, anywhere. It can help you to make a pH test anywhere, you just take it to the pool, on a trip, to the beach, camping, etc.
•【pH tester】Full measurement range of pH 0 - 14, reliable and quick readings. The technical definition of pH is that it measures the activity of the hydrogen ion (H+) and is reported as the reciprocal of the logarithm of the hydrogen ion activity. Therefore, water with a pH of 7 has 10-7 moles per liter of hydrogen ions, whereas a pH of 6 has 10-6 moles per liter.
•【Tester is ready for use】The new tester that is being shipped is already calibrated, including the new battery inside, and prepared for use.

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$15.00

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MEXYBE

2025 All-New pH Meter for Water - High Accuracy Digital pH Tester (0.01 Precision) with UL Certification and 3 pH Calibration Powders - Ideal for Home Water, Hydroponics, Aquariums, Pools, and More

8.8

ChoiceComparer.com Score

8.8

/ 10

Great

Main highlights

•Reliable Brand: At MEXYBE, we believe that knowledge is power, especially the water we consume. We are dedicated to empowering individuals with precise water testing tools because clean, balanced water is a fundamental right. Our pH meter represents our commitment to health, safety, and peace of mind. Whether you're ensuring drinking water purity or maintaining your garden, MEXYBE delivers trusted accuracy. Join us in protecting what matters most—your health, home, and our planet
•Friendly Reminder: Regularly cleaning the pH meter electrode is crucial for ensuring accurate readings. Contamination of the electrode can lead to unstable measurements. Please use an appropriate cleaning solution, such as distilled or purified water. If you have any questions, feel free to contact our customer service team at any time
•Easy to Use: 1. Immerse the meter in water so the water level stays between the MAX and MIN marks. Let it sit for 5 minutes. 2. Press the ON/OFF button and lightly stir the meter to remove any air bubbles. 3. Last take the reading once it stabilizes. (Important Notice: 1. This product is factory calibrated and ready to use. For first-time use, soak the electrode in the liquid you want to test for 30 minutes to activate it. 2. If the product hasn't been used for over a day, soak the electrode in the liquid you want to test for 15 minutes to activate it before using. Failing to do so may result in longer stabilization times for pH readings)
•Essential for Every Home: Elevate your quality of life with this versatile tool. Perfect for testing pH balance in various environments such as household water, drinking water, reverse osmosis systems, hydroponics, aquariums, swimming pools, hot tubs, and spas. Essentially, any situation where accurate pH testing is needed can benefit from this meter. Enhance your daily living with the confidence that comes from knowing your water is always just right
•What’s in the Box & Support You Can Count On: Along with your pH meter, you'll receive a detailed user manual, 2 x 1.5V button cells (pre-installed), and 3 x pH buffer powders. Plus, a dedicated team of water quality experts ready to offer rapid and efficient responses round the clock through live chat and email. We are committed to taking our customers' feedback seriously, as our sole aim is to deliver products and services that hold genuine value for you
•Important Notice: 1. This product is factory calibrated and ready to use. For first-time use, soak the electrode in the liquid you want to test for 30 minutes to activate it. 2. If the product hasn't been used for over a day, soak the electrode in the liquid you want to test for 15 minutes to activate it before using. Failing to do so may result in longer stabilization times for pH readings

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$11.98

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GIDIGI

pH Tester,Digital pH Meter for Water,New Version TDS Meter for Drinking Water with Backlit Simultaneously Display 4 in 1 TDS pH EC Meter for Water Hydroponic Nutrient Solution,Pool,Home Use

8.6

ChoiceComparer.com Score

8.6

/ 10

Good

Main highlights

•Multi-functional 4-in-1 pH Tester: Our GIDIGI digital pH testers are versatile and can measure not only pH values but also TDS, EC, and water temperature. With a wide test range for pH (0.1-14.0), EC (0-9990μS/cm, 10.01-19.99mS/cm), TDS (0-9990ppm), and temperature (32.0-140.0℉, 0.0-60.0℃), it is perfect for various applications such as hydroponics, aquariums, drinking water, swimming pools, tap water, hot tubs, and brewing
•User-Friendly Features:We understand the importance of user-friendly designs. That's why our pH tester features a large backlit LCD screen, enlarged by 30%, which makes it easy to read even for the elderly or children. Additionally, with just one-click, you can switch between TDS and EC values, making it convenient for both drinking water monitoring and hydroponics enthusiasts
•PH TDS Meter for Drinking Water:pH and TDS is two key parameters that determine the suitability of drinking water. GIDIGI pH TDS Meter for water is good tool for testing drinking water. Test the purity of drinking water to ensure it's safe and healthy, monitor if Reverse Osmosis (RO)/Deionization(DI) System works properly, whether filter need replaced.Just dip the probe into water, you can read pH and TDS value at the same time
•GIDIGI pH Meter for Water:Want to give your family and friends the health? If you're looking for that promotes health and well-being, our GIDIGI pH tester is an excellent choice! It allows your loved ones to accurately test the purity of water source,giving them peace of mind knowing they are drinking clean and healthy water. Whether it's for a health-conscious friend or someone who enjoys outdoor activities, our pH tester is the ideal choice
•Accurate and Reliable Water Testing Kits:GIDIGI water quality tester is your first choice, With its advanced technology and high-quality titanium alloy probe, you can trust that it will deliver precise readings every time. With the most advanced technology and advanced functions, our pH meter ppm EC tester is the ultimate choice for testing accuracy

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$22.99

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Pious

Pious PH Tester Digital, 5 in 1 PH Meter for Water/Salinity Meter/tds/ec/Thermometer, Pool Salt Tester with Constant Temperature Compensation, Suitable for Drinking Water Swimming Pools Aquariums

8.5

ChoiceComparer.com Score

8.5

/ 10

Good

Main highlights

•Digital Pool Water Tester: A digital pool water tester can measure pH, salinity, EC, TDS and temperature; Simply press the (MODE/CAL) button to switch and read values between pH, salinity (ppm/ppt), EC (μ S/cm/ms/cm), and TDS (ppm/ppt). Long press and hold the HOLD/TEMP button to switch between temperature and Celsius units. Satisfy regular monitoring of water quality on a daily basis, allowing you to stay informed about the water quality situation at any time
•Automatic Temperature Compensation: The saltwater test kit does not need to pay attention to the temperature of the test liquid; This instrument can accurately measure sample values within the temperature range of 0 ° C-60 ° C (32 ° F-140 ° F), solving the problem of inaccuracy caused by liquid temperature changes. Whether in winter or summer, you can obtain accurate values
•Humanized Design: The pool water tester backlight function ensures that you can use the product in dimly lit working environments. The HOLD/TEMP button can be used to lock the reading, and the backlight will turn off within 30 seconds. Press any key to turn the backlight back on
•Easy Calibration: Supports 3-point automatic calibration, and can easily achieve automatic calibration at 4.01, 6.86, and 9.18 according to the instruction manual. Don't worry about the calibration solution (the box is equipped with a calibration package). The equipment has been calibrated at the factory and is ready for use upon getting the device
•Widely Used: The salinity tester can measure saltwater, used in swimming pools, saltwater pools, hot tubs, SPAs, aquariums, aquaculture, saltwater aquarium kits, and saltwater aquarium testing kits; The pH EC meter can measure the EC and pH of hydroponics. TDS and pH meters measure liquids such as permeate water, pool water, drinking water, tap water, irrigat

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$36.99

$39.99

-8%

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