10 Best Ph Meter For Hydroponics of December 2025

• 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.
• Comes with protective case; Lightweight, handheld design for portability and convenience
• Due to recently reviews about 1413 solution, please note that TDS Meter had been calibrated by 1413 solution in advance; You can use it directly and it could last for 1 year without second calibration; So 1413 calibraiton solution is not included

VIVOSUN

• ✔ACCURATE AND RELIABLE: To achieve high accuracy, equipped with premium quality titanium alloy probe, and reliable Automatic Temperature Compensation (ATC) ensures reading always be accurate at various temperatures.
• ✔MULTIFUNCTIONAL AND UPGRADED: Professional TDS, EC and Temperature Pen 3 in 1. Upgraded with big backlit LCD for easier reading, and auto-lock function for easier use.
• ✔EASY AND INSTANTLY: Just turn TDS meter on and stir water gently, then stabilized readings will be auto-locked on LCD in seconds, and the tds ppm meter will shut off automatically if without operation over 2 minutes.
• ✔MULTIPURPOSE TDS TESTER: Test drinking water purity to ensure it's healthy, monitor if Reverse Osmosis (RO)/DI System works properly, whether filter need replaced, maintenance aquarium, hydroponics(test nutrients), pool and spa, etc.
• ✔3 YEARS WARRANTY. And we offer 90 days Money Back Guarantee if not totally happy with the digital TDS water tester meter.

HoneForest

• ✅【TDS METER】: 0~9990 ppm, Accuracy: ±1%. 3 in 1 TDS meter can measure TDS, EC and Liquid Temperature in Fahrenheit or Degree Celsius. TDS meter have the function of Automatic Temperature Compensation, the measuring data won’t be influenced by the water temperature but influenced by the air temperature.
• ✅【PH METER】: 0.01 High Accuracy Hand-held PH Meter. PH measure range: 0~14PH, Accuracy: ±0.01 PH. The PH meter can tell you the acid-basic value. PH have the function of Automatic Temperature Compensation, the measuring data won’t be influenced by the water temperature but influenced by the air temperature.
• ✅【QUICK READ AND EASY USE】: With the help of PH Tester and TDS Tester, you can acknowledge the water quality and the PH data in 5 seconds. TDS tester and PH tester have small size and low weight, easy to be carried, Comes with protective case, convenient for you to take it when go outside.
• ✅【EXTENNSIVE USE】: Suitable for testing drinking water, pool, aquarium, RO system, Spa, or hydroponics. As Well, You Can Calibrate the Tester with One Touch Button Using Buffer Powder. Please Ensure There Is No Water In PH & TDS Meter After Use, Otherwise They Will Rust.
• ✅【EXCELLENT AFTER-SALES】: If you have any questions about the PH Meter and TDS Meter Combo, please feel free to contact us and let us know how to make it better. We will provide the best after-sales service.

GroTheory

• ✔HIGH ACCURACY: PH tester has a sensitive electrode sensor ,simply press "ON", It only takes a few seconds for your result to appear on screen.read accurate pH levels. The included detailed manual will show you how to get the best accurate and stable reading.
• ✔WIDELY USE: Ideal for household or laboratory use; Suitable for testing pH balance of drinking water, pool, aquarium, RO system, Spa, or hydroponics; Appropriate for wide range of applications
• ✔ AUTOMATIC TEMPERATURE COMPENSATION: No more need to take care about the temperature of testing liquid, as ph meter has built in (ATC) automatic temperature compensation, so that it can accurately determine pH value of the sample at any temperature in a range of 0°C - 80°C (32°F - 176°F)
• ✔Make You Satisfied With The Products: Come with 1x PH meter, 1x user manual, 3x 1.5V LR44 button cells(build-in), 3x PH Buffer Powders.
• ✔Lightweight And Easy To Use: Just remove the protective cap and immerse the PH meter electrode in the solution and press the button to be measured. Beats the heck out of trying to see the colors of a litmus strip.

PentaBeauty

• EASY MEASUREMENT AND ACCURATE RESULTS – no more time consuming paper strips or other inaccurate pH test chemicals, our device is a digital pH tester which will allow you to test your liquid quickly and accurately within ±0.01 pH - no matter what your liquid is or whether you are a new or experienced user
• AUTOMATIC CALIBRATION – our 7Pros PH meter comes factory calibrated, but recalibration is required in case of long period of inactivity or after a frequent use. For a proper calibration you get 2 sets of calibration powder (6 packets), no need of any kind of screwdrivers to calibrate, you just have to push the auto-calibration button. Easy Instructions manual is included
• IDEAL FOR ANY HOUSEHOLD- You can use this small, but powerful, device to measure your aquarium, pool, pond in a garden, bath tub to test the levels of alkalinity in your drinking water, urine, RO System, spa, soap mixtures, food, wine, beer or any other liquids. Do you Travel a lot? Make sure the water you drinking abroad is good enough - take your 7Pros pH meter with you and test the water before drinking. Along with a tds meter it will form a perfect travel kit.
• FAST RESULTS, CONVENIENT SIZE - it only takes a few seconds for your result to appear on screen. Simply press "ON", stir gently and the reading will stabilize on the display in moments. This portable size instrument allows you to carry it around easily in your pocket and do your measuring anywhere. Its special plastic case will protect it whether you take it to the pool, on a trip, to the beach, camping or a picnic
• AUTOMATIC TEMPERATURE COMPENSATION - no more need to take care about the temperature of testing liquid, as 7Pros meter has built in (ATC) automatic temperature compensation, so that it can accurately determine pH value of the sample at any temperature in a range of 0°C - 80°C (32°F - 176°F)

7Pros

• MEASURING RANGE: 0.00~14.00pH and 0~55°C (32~131°F) Temperature with ATC so temperature change can't affect on pH level measurement.
• APPLICATIONS: Great for student, professional and even personal used in achieving the correct pH and temperature level in water quality monitoring and analysis.
• FEATURES: Separate electrode to avoid contamination, composed of replaceable BNC type electrode and fixed temperature probe
• POWER SUPPLY: 4 x 1.5V AG13 button battery or 6V DC power adaptor ideal for continuous monitoring

DANOPLUS

• Ideal for residential or commercial use, water, pool, spas, liquid food, laboratory, aquaculture and hydroponics.
• Advanced technology makes the test result fast and accurate.Easy calibration (pH4.00, pH6.86).
• Pocket size, lightweight, high quality.
• With Automatic Temperature Compensation (ATC). Adjust to water temperature and give pH reading almost instantly.
• What You Get: VIVOSUN pH meter, user manual, 2 x 1.5V button cells (built in), 3 x pH buffer powders, 1-year warranty and friendly customer service.

VIVOSUN

• ✔HIGH ACCURACY: Ensure Your Pool, General Hydroponics Ph or Even Drinking Water Has a Perfect Ph Balance and Safe for Use with Tester Precision Ph Accuracy. Tester Has a Sensitive Electrode Sensor to Read Accurate Ph Levels. The Included Detailed Manual Will Show You How to Get the Best Accurate and Stable Reading
• ✔AUTO CALIBRATION: The Ph Meter Has an Auto Temprature Compensation Feature That Adjusts to Water Temperatures and Water Quality to Give Ph Readings Almost Instantly. As Well, You Can Calibrate the Tester with One Touch Button Using Buffer Powder.
• ✔AUTOMATIC TEMPERATURE COMPENSATION: No more need to take care about the temperature of testing liquid, as ph meter has built in (ATC) automatic temperature compensation, so that it can accurately determine pH value of the sample at any temperature in a range of 0°C - 80°C (32°F - 176°F)
• ✔WIDE USE: Ideal for Household or Laboratory Use, Suitable for Testing Ph Balance of Drinking Water, Pool, Aquarium, Ro System, Spa, or Hydroponics; Appropriate for Wide Range of Applications
• ✔MAKE YOU SATISFIED WITH THE PRODUCTS: Come with 1x PH meter, 1x user manual, 2x 1.5V LR44 button cells(build-in), 3x PH Buffer Powders

KoolaMo

• 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

Apera Instruments, LLC

• Measure 5 parameters, continuously monitoring shows readings on its large-screen triple display with backlight. Powered by its rechargeable battery (installed in the main unit) or the power adapter included which supports a long period of monitoring. 
• Measurement Range: EC: 0.00~19.99EC; pH: 0.00~14.00pH; CF: 0.0~199CF; Temp: 0~55°C (32~131°F); TDS: 10~19990ppm
• Proven high accuracy and Auto Temperature compensation (ATC), comes with removable BNC electrode
• pH calibration powders and EC calibration solution are included in the set. Calibrates easily and offer safer and precise measurement
• Best in aquariums, hydroponics, laboratory, spas, swimming pools and other water systems

Gain Express