Top 10 Best digital ph meter in 2026

Last Updated - 6/8/2026

🏆Best Choice

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

9.8

ChoiceComparer.com Score

9.8

/ 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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YAMRON

YAMRON 4-in-1 Soil Moisture Meter Digital Plant Temperature/Soil Moisture/PH Meter/Sunlight Intensity Backlight LCD Display Soil Test Meter for Gardening, Farming and Outdoor Plants

9.7

ChoiceComparer.com Score

9.7

/ 10

Outstanding

Main highlights

•【4 in 1 function】This is a 4-in-1 multifunctional soil tester.Our soil tester fastly to measure soil moisture, pH, temperature and sunlight to help you take better care of flowers and plants.You can know when you need to water your soil by measuring moisture and pH & Temperature value of the soil and sunlight level of plants with it.
•【Large Screen ＆ Backlight LCD Display】The Soil Tester uses a large LCD screen and white backlight to conveniently display and read digital parameter in day or dark.Use AAA1.5V * 4 batteries (not included),it will alert when the battery is low.
•【Quick Accurate measurement】The latest probe detection technology in 2024 can quickly and accurately measure the pH, moisture and temperature in the soil，with the light intensity of the light sensor analysis on the instrument, it can allow you to know when to water, to control the pH and temperature acidity, and determine whether the plants have enough light to better cultivate the plants more scientifically.
•【Easy to use】Just simply plug the probe into the soil about 4 inches（10cm) , wait 10 seconds to read intuitive data,and you will get an accurate and precise reading immediately.（This soil tester cannot be used directly to test any liquid. When measuring the soil, if the soil is too dry, do not insert it into dry and hard soil. Before testing, please water the soil test area and wait for 10 minutes, otherwise the testing machine will be damaged.）When testing soil pH and moisture, you need to read data from at least 5 locations in the soil. The average value of all the data will be the final soil pH and moisture.
•【More convenient to read】The screen content adopts visual content design, which helps you read the data through specific values and easy to understand graphics, so that even novice growers can easily understand your soil conditions. The 45° rotating head design allows you to bend your head 0°-45°, allowing you to easily view the screen content without bending over.
•【Wide Range＆Provide satisfactory service】Both indoor and outdoor can be used. The plant measuring instrument can be used for your garden, farm, potted plants, succulent plants, etc.We are committed to providing customers with satisfactory service. If you have any dissatisfaction with the product, please contact us.

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$27.98

$32.98

-15%

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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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Apera Instruments

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

9.4

ChoiceComparer.com Score

9.4

/ 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

9.2

ChoiceComparer.com Score

9.2

/ 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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Apera Instruments

Apera Instruments AI311 Premium Series PH60 Waterproof pH Pocket Tester Kit, Replaceable Probe, ±0.01 pH Accuracy, Lcd display

9.1

ChoiceComparer.com Score

9.1

/ 10

Excellent

Main highlights

•NOTE: A few drops of water are added to the electrode cap before the product leaves the factory. This is to maintain the sensitivity of the electrode. Therefore, when you use it for the first time, it is normal to find water droplets in the electrode cap
•Accuracy: 0.01 pH; range: -2.00 to 16.00 pH, 32 to 122˚F (0 to 50˚C); Auto. Power-Off: 8 minutes without operation
•Easy 1-3 points auto. calibration, recognizes 5 types of solutions (1.68, 4.00, 7.00, 10.01, 12.46); Auto Temp. Compensation (ATC) ensures accuracy in various temperatures (32-122˚F)
•High quality replaceable glass pH probe, suitable for regular water solutions e.g. pools&spas, hydroponics, environmental monitoring, cooling towers, beverage, etc.
•Large LCD with 3 backlit colors (indicating different modes), dual display of temp./pH, and reminders of completed calibrations and stable readings
•The smiley icon indicates stable readings so you won't have to guess when is the right time to record the measurements
•COMPLETE KIT with READY-TO-USE calibration solutions, calibration bottles, storage solutions, AAA batteries, and a lanyard all in a rugged portable case

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$79.66

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GIDIGI

GIDIGI pH Meter Food Digital Electronic pH Tester for Fermentation 3*50ml pH Buffer Calibration Solution Kits Hot Sauce Food Tester Probe for Cheese Sourdough pH Temperature pH Test Strips for Acidity

8.9

ChoiceComparer.com Score

8.9

/ 10

Great

Main highlights

•【Become a Hot Sauce Maestro with a pH Food Tester 】The hot sauce pH level is important. A good pH level for the sauce is 3.4 and can be tested accurately with a food pH meter. The lower pH level of hot sauce preserves the hot sauce and allows for a longer shelf life. The accuracy of pH testing strips can't provide the precision necessary for hot sauce making. Say goodbye to guesswork, with the proper GIDIGI pH tester, you can master the art of creating perfectly balanced hot sauces.
•【Food & Dairy pH Meter】Designed to bring simplicity to pH testing of food and dairy products. The specialized probe features a PVDF body, conical tip, and open junction making it ideal for direct measurement of semi-solid foods.The open junction design reduces clogging from suspended solids and proteins found in food and dairy products for a more stable pH measurement.The spear tip design allows for penetration into solids, semi solids, and emulsions for the direct measurement of pH .
•【Stable Performance Digital pH Tester for Fermenting】GIDIGI fermentation ph tester is a reliable and well-designed tool. The spear tip food grade ph test strips for fermenting is a good helper in fermentation industry. Such as sourdough bread, sauce(hot sauce, salsa, mayonnaise) dairy products(yogurt, cheese and butter) kombucha all-grain brewing... GIDIGI pH meter for food help you to be successful in fermenting foods . Even if a beginner, you can also easily master the fermentation techniques.
•Premium Accuracy&Easy Calibration】GIDIGI ph food tester ±0.01 pH precision with 3×50ml USA-standard calibration solutions (pH 4.00/7.00/10.00). This digital electric ph meter with auto-buffer recognition simplifies setup for inspectors and artisans. pH meter for acidic foods:7.00 and 4.00 pH calibration solution;pH meter for alkaline foods:7.00 and 10.01 pH buffer solution.Whatsmore,GIDIGI store provides complete pH test kits, including pH solution kits and pH replaceable electrode.
•【Functions and Services of GIDIGI pH Food Tester】: GIDIGI is a brand dedicated to making pH testing easier. GIDIGI food pH meter has many friendly functions: HD backlight, digital display, ATC(automatic temperature compensation), ℃ and ℉ conversion. It can easily obtain accurate pH value in dim and temperature-changing environments. If you have any problems during use, please contact us firstly by GIDIGI channel and we will reply you in time.

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$44.99

$49.99

-10%

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UIUZMAR

UIUZMAR Digital pH Meter pH TDS EC Meter for Hydroponic Solution pH and EC Meter with LCD Display TDS Water Tester pH PPM Meter for DWC Setup Aeroponic

8.8

ChoiceComparer.com Score

8.8

/ 10

Great

Main highlights

•[Great Digital pH Tester] A great tool to monitor pH level regularly, as the pH of nutrient solution being such an important factor in hydroponic systems. For the majority of plants, a pH range of 5.3-6.5 is considered appropriate for hydroponic.
•[PPM EC Meter for Hydroponics] Check what the TDS and EC level is in a hydroponic system, and helps you balance water to keep proper water condition. It is vital to have the correct EC and PPM level.
•[4 in 1 pH Meter] With pH TDS EC TEMP functions; General uses include hydroponics, greenhouse reservoir, DWC setup, hot tub, spa, drinking water, home tap water, well water, RO system, aquarium, and home brewing.
•[Easy to Calibration and Storage] Simple 3-point pH calibration process (pH4.0/ 7.0/10.01), comes with 2 sets of pH calibration powders. EC/TDS is pre-calibrated, right out of the box.
•[Product Design Features] Automatic temperature compensation (32-122 ℉), provides consistent reading regardless of any fluctuations in temperature. With LCD backlit, the backlight shuts off in 30 seconds, press any key to reopen backlight.

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$23.95

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PmoYoKo

Digital pH Meter Tester Pen With 3 Calibration Powders, 0.01 Accuracy, Pocket Size, LCD Display for Household Drinking, Pool and Aquarium

8.6

ChoiceComparer.com Score

8.6

/ 10

Good

Main highlights

•【3-in-1 pH Meter】pH meter has a three-in-one function, which can measure PH, TDS and temperature with high precision at the same time. All-round measurement of water quality to ensure healthy water quality. Replaces 3 single - use tools, simplifying water testing for pool care, gardening, and daily use—no more switching devices.
•【High Accuracy pH Meter for Water】0.01 Resolution High-accuracy algorithm chip and electrode of our TDS meter digital pH meter ensure accurate and fast response. Trusted by lab workers for pH testing in cosmetics, fermentation, and aquarium monitoring. Perfect for checking solution pH during R&D, tracking brew acidity, or ensuring tank water balance. No more guesswork—get reliable, lab - standard results every time, even in complex setups!
•【Friendly Backlight 】Our digital ph meter auto - activating bright backlight works in dim grow spaces . Check pH/TDS of water reservoir, test solution temp, monitor Aero Garden and hydroponic systems—no squinting or repeated button presses. pH meter with smart power can keep the glow on for HOURS, perfect for nighttime checks or hard to read TDS in low - light grow tents. Ideal for hydroponic and aeroponic growers!
•【Automatic Temperature Compensation Digital pH Meter】No longer need to pay attention to the temperature of testing liquid, pH meter can accurately determine the pH value of the sample in the temperature range of 32°F-140°F(0°C-60°C), so as to solve the inaccurate problem caused by changing the liquid temperature.
•【Pocket Size pH Meter for Water】This tiny and handheld pH tester fits in your pocket so you can carry everywhere for testing aquarium, pool, garden, bath, spa, and even drinking water/liquid mixes , wine, soap, beer. Perfect for on - the - go pH checks!
•【pH Meter to Improve Water Quality】This pH/TDS meter can help you find out quality water value. Water with equal pH, TDS levels are perfect for people's daily needs for drinking water.Aquarium Hobbyists Must-Have! Tests pH to prevent fish gill irritation, TDS to control water hardness, and temp to reduce fish stress—covers tank setup, water changes, and disease prevention. Solves' cluttered fish-keeping tools' hassle and supports better fish survival.
•【How to calibrate the pH Meter/TDS Meter?】 1. Add pH4.00/pH6.86/pH9.18 buffer powder into water and stir it. 2. Press the ON/OFF button and adjust to pH mode. Put the electrode into pH4.00/pH6.86/pH9.18 standard solution and wait 5~10 seconds. 3. Press and hold the MODE/CAL button and release after 6 seconds; wait pH4.00/pH6.86/pH9.18 flash 3 times till readings are no longer flashing, finish the pH calibration.
•【Tips】 For better using experience, we recommend to soak the tds meter digital water tester in clear water for 5 minutes before starting calibration after receive the product. Because it may cause inaccurate readings if customer immediate use for the first time.

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$21.99

$24.99

-12%

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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

8.5

ChoiceComparer.com Score

8.5

/ 10

Good

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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