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Best ph meters - February 2026

Last Updated - February 1, 2026

1
Best Choice

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Hanna Instruments

Hanna Instruments HI98128 pHep 5pH/Temperature Tester, 6-25/64" Length x 1-19/32" Width x 1" Height

Hanna Instruments

$139.00

$147.99
(6% Off)

More Details
Main highlights
- Waterproof, dustproof housing allows the tester to float
- Replaceable electrode cartridge to extend meter life
- Dual-level LCD screen simultaneously shows the current measurement and the current temperature
- Compact pH and temperature tester used in laboratory and industrial applications
- Automatic Temperature Compensation (ATC) for accurate pH readings in fluctuating temperatures and automatic calibration at one or two points to help prevent calibration errors
$139.00
$147.99 (6% Off)
2

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Extech

Extech PH100 Waterproof ExStik II pH Meter Kit with Flat Surface Electrode and Temperature Display

Extech

$124.00

More Details
Main highlights
- Temperature:-58 to 572-Degrees F (-50 to 300-Degrees C)
- Stem thermometer with adjustable stainless steel probe
- Fast response; auto Power off after 1 hour
- Detents at 45-Degrees , 90-Degrees , 135-Degrees , and 180-Degrees
- 4.5-Inch (114mm) stainless steel probe adjusts from 0 to 180-Degrees for storage or measurement
$124.00
3
Best Value
24% Off

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Apera Instruments
24% Off

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

Apera Instruments

$50.24

$66.00
(24% Off)

More Details
Main highlights
- Up to 2000 hours' continuous operation, powered by AAA batteries
- Easy auto. calibration with buffer recognition; auto. temp. compensation (ATC) ensures accuracy in various temperatures (32 to 122F)
- Comes in a rugged carrying case with pH 4&7 buffers and a lanyard
- Backed by Apera quality pH sensor with low impedance, ensuring high response rate
- Auto recognition of stable values improves consistency, so you don't have to guess when to manually hold measurement
$50.24
$66.00 (24% Off)
4

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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

VIVOSUN

$15.99

More Details
Main highlights
- PH Meter: Full measurement range of pH 0 - 14, reliable and quick readings
- Included: PH meter, 3-in-1 TDS meter, 3 calibration buffers
- Features: Comes with protective case; Lightweight, handheld design for portability and convenience
- Application: Great for all home and laboratory TDS & pH testing applications including aquariums, swimming pools
- 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
$15.99
5

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

VIVOSUN

VIVOSUN Digital pH Meter, 0.01pH High Accuracy Pen Type pH Tester for Hydroponics, Household Drinking, Pool and Aquarium, Yellow, UL Certified

VIVOSUN

$11.99

More Details
Main highlights
- What You Get: pH meter, user manual, 2 x 1.5V button cells (built in), 3 x pH buffer powders
- Features: Pocket size, lightweight, backlit function, high quality
- Easy Calibration: Advanced technology makes the test result fast and accurate; LCD screen makes reading clearly
- Application: Ideal for residential or commercial use, water, pool, spas, liquid food, laboratory, aquaculture and hydroponics
- ATC Function: With Automatic Temperature Compensation (ATC), adjust to water temperature and give pH reading almost instantly
$11.99

Best ph meters - February 2026

Hanna Instruments HI98128 pHep 5pH/Temperature Tester, 6-25/64" Length x 1-19/32" Width x 1" Height

Extech PH100 Waterproof ExStik II pH Meter Kit with Flat Surface Electrode and Temperature Display

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

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

VIVOSUN Digital pH Meter, 0.01pH High Accuracy Pen Type pH Tester for Hydroponics, Household Drinking, Pool and Aquarium, Yellow, UL Certified

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