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Litmus-Paper.com's
Best pH Meters of 2021
Complete Buyers Guide
One of the easiest and most accurate ways to measure pH is by using a digital pH meter. On this page we give you an overview of the best pH meters currently available.
Wether you’re a consumer looking to test your body pH level, a gardener looking to test soil ph or a scientist working in a laboratory, you can be sure that these are the best pH meters on the market. We’ve taken a look at some of the best pH meters of 2021 and featured the top selling here. These pH testers, or pH probes if you will, all have different parameters but common for all of them is that the instrumentation is made for measuring pH in soil testing or water testing.
Digital PH Meter, PH Meter 0.01 High-Precision Pocket Water Quality Tester, PH...
- 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.
$12.99
amazon.com- 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.
- FAST AND HIGH ACCURACY: Our Digital PH Meter can 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.
- 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 DegreeC - 80 DegreeC (32 DegreeF - 176 DegreeF).
- WIDE USE: Pocket Size PH Meter is the ideal test kit for home and laboratory uses.Suitable for testing the pH of drinking water, swimming pools, aquariums, reverse osmosis systems, spas or hydroponics; ideal for testing water, swimming pools, aquariums, spas, hydroponics, food, wine and beer, etc.
- 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.
pH Meter, Dr.meter Upgraded 0.01 Resolution High Accuracy pH Tester with Backlit...
- ▶ 【Notification】Calibrate once per week if you often test solution of PH 10, or once per half month for neutral solutions. The 250ml calibration solution for multiple uses (10ml or so each time). Then rinse the electrode with pure water before next test. Rinse and rest 3-5 min before conversing from strong acid to strong alkaline and vice versa.
$32.99
amazon.com- ▶ 【Notification】Calibrate once per week if you often test solution of PH 10, or once per half month for neutral solutions. The 250ml calibration solution for multiple uses (10ml or so each time). Then rinse the electrode with pure water before next test. Rinse and rest 3-5 min before conversing from strong acid to strong alkaline and vice versa.
- ▶ 【Automatic Calibration】 We make your job faster and easier than ever with this convenient PH tester! With the 3-point calibration procedures, your PH testing device will automatically identify the calibration solutions to give you your reading in a snap.
- ▶ 【Automatic Temperature Compensation】 Temperature can affect reading levels, our PH meter's automatic temperature compensation can ensure that you're getting the best possible reading. Unlike other PH metersthat only have a range of 0-50 degree, ours has a even better range of 0-70 degree, so you can test with confidence in any environment.
- ▶ 【Clear Digital Display with Alerts】 Tired of squinting at a small screen to get your readings? Enjoy this PH meter's large, backlit LCD screen that displays the information in an intuitive layout so you can still see even in low visibility situations. When the PH value is lower than 3.5 or higher than 12.5, the white digital display will change to red and flash to alert you.
- ▶ 【User Friendly】 You can easily replace the 2 AAA batteries when it's time, and you can also activate the 15-minute auto-off functionality to save battery. Plus, it even comes with a storage case to keep it safe and protected when you're on the go.
HMD PH-200 Digital Professional Waterproof 0-14 PH & Temperature Meter
- Measures pH and Temperature, Range: 0-14 pH, 0-80 °C, 32-176 °F
- Autoranging three point calibration with digital fine tuning
- Waterproof housing (IP-67 rating)
- Includes storage solution in a sponge embedded in a clear cap
$63.23
amazon.com- Measures pH and Temperature, Range: 0-14 pH, 0-80 °C, 32-176 °F
- Autoranging three point calibration with digital fine tuning
- Waterproof housing (IP-67 rating)
- Includes storage solution in a sponge embedded in a clear cap
- Auto-off function, data-hold function and low-battery indicator
Horiba LAQUAtwin pH-33 Compact Meter Potable pH Meter
- Portable ph Meter
- Calibration Five-point
- Measurement range 0 to 14 pH
- Minimum sample volume 0.1mL or more *1
- Range and Resolution 0.01 pH
$255.90
amazon.com- Portable ph Meter
- Calibration Five-point
- Measurement range 0 to 14 pH
- Minimum sample volume 0.1mL or more *1
- Range and Resolution 0.01 pH
WTW - 2AA312 - WTW pH 3310 ProfiLine meter kit with SenTix...
- A rugged new line of electrochemistry meters with a range of features, benefits, and price points to
$1,642.40
amazon.com- A rugged new line of electrochemistry meters with a range of features, benefits, and price points to
Apera Instruments AI209 PH20 Value Waterproof pH Pocket Tester, ±0.1 pH Accuracy,...
- 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
$54.98 $66.00
amazon.com- 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
Bluelab PENPH pH Pen Fully Waterproof Pocket Tester, Easy Calibration, Double Junction...
- Measures pH in nutrient solution (acid or alkaline) for precise up and down adjustment with lab quality glass probe; General uses include growing tent, swimming pool, drinking water, aquarium, fish tank, and brewing
$74.53 $112.50
amazon.com- Measures pH in nutrient solution (acid or alkaline) for precise up and down adjustment with lab quality glass probe; General uses include growing tent, swimming pool, drinking water, aquarium, fish tank, and brewing
- This hydroponics tester has ATC that provides consistent reading regardless of any fluctuations in temperature; Calibration reminder; Durable design for repeated uses; Fully waterproof and floats in solutions
- Double junction electrode has a longer lifespan compared to standard probes due to less contamination and is more accurate and reliable than comparable pens, test strips, drops, and more
- Combine with ppm meters for full indoor garden nutrients monitoring in water and soil; Other features: Auto off function, low battery indicator, units for temperature; KIT INCLUDES: AAA battery, lanyard, and calibration solution
- IF PROBE IS DRY, SOAK IN KCL SOLUTION FOR 24 HOURS, KCL SOLUTION IS SOLD SEPARATELY; Made in New Zealand, and manufactured by Bluelab, the industry leader in hydroponic testing equipment; 1-Year Limited Warranty with proof of purchase
VIVOSUN pH and TDS Meter Combo, 0.05ph High Accuracy Pen Type pH...
- 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
$19.99
amazon.com- 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
Best pH Meters of 2021
Buying Guide and Advice
Detailed reviews of the best pH meters
When reading the reviews remember that distilled water has a pH of 7, and that the pH scale goes from 0 to 14. In addition take note that pH meters are different from ORP meters, TDS meters and dissolved oxygen sensors, although they are often used in combination to rate the quality of different type of liquids.
1The Beginners Choice
The Beginners Choice
The Embryant Digital High Accuracy Pocket Size Handheld pH Meter is an easy and affordable way to accurately test the acidity or alkalinity of solutions. Simply immerse the electrode in a solution thats either alkaline or acidic and read the pH value right of the device. This product is ideal for everyday testing and hobby use, but even though the accuracy is said to be between 0.01 and 0.05 pH, don’t expect extreme ph scale accuracy without at least calibrating the device with a buffer solution.
This Embryant pH Meter is perfect for simply testing the pH of the water in swimming pools, aquariums or in the tap. It can also be used in a basic laboratory setting, but since it is not very durable and the accuracy can be questioned, we recommend one of the other more professional pH meters featured in this article for laboratory use.
- Measuring Range: 0-14 pH
- Advertised Accuracy: 0.01 pH
- Automatic Temperature Compensation (ATC)
This pH meter by Embryant is one of the best selling products in the Lab pH Meters category on Amazon.com, and with an average user rating of 4.2 from over 425 reviewers, you can be certain that this is an excellent choice if you are looking for a low end, affordable and all around pH meter as an acid/alkalinity indicator.
2The Hobbyist’s Favorite
The Hobbyist’s Favorite
If you think of yourself as more than a beginner, but still not ready to get full on professional gear, the Dr. Meter PH838 0.01 Resolution High Accuracy Pocket Size pH Meter with ATC is just for you. This pH meter is highly reliable and has an impressive accuracy of 0.01. The pH meter is handheld and very light. It also comes with a carrying case for ultimate portability and convenience.
This pH meter is widely used, and is very popular in education and for water treatment, because of the highly accurate, reliable and quick readings. It is a better alternative to ph test strips og litmus paper.
Dr. Meter PH838 0.01 Resolution High Accuracy Pocket Size pH Meter with ATC has been received by customers with massive approval which can be seen on Amazon.com. Here the product is ranked #1 in the pH meters by Dr. Meter category, and if you read the customer reviews and view the amazing average user rating of 4.3, you will see that customers love this product.
- Measuring Range: 0-14 pH
- Advertised Accuracy: 0.01 pH
- Automatic Temperature Compensation (32-158°F)
3The Choice for the Small Laboratory
The Choice for the Small Laboratory
$63.23
Amazon.comOur third featured product is the HMD PH-200 Digital Professional Waterproof 0-14 PH & Temperature Meter which is the perfect choice for the hobbyist who wants a more professional pH meter, as well as the small laboratory who want’s a semi-professional device with high accuracy, extreme durability and auto ranging three point calibration with digital fine tuning.
One of the extra features that this pH meter has over the other featured products is that it is waterproof, and includes a storage solution that makes sure that the pH meter is always calibrated and measures accurately.
- Measuring Range: 0-14 pH
- Advertised Accuracy: 0.01 pH
- Automatic Temperature Compensation (32-176°F)
Although the HMD PH-200 Digital Professional Waterproof 0-14 PH & Temperature Meter is perfect for small laboratories it can of course also measure the pH value of swimming pools, tap water, coffee etc. just as well (or better) as the other best pH meters. The user rating on Amazon.com averages at 3.8, which shows us that customers approve of the product and that they are happy with their purchase.
4The Professional pH Meter
The Professional pH Meter
This pH meter by Horiba is meant for a professional environment where durability, accuracy and ease of use is crucial. The Horiba LAQUATwin pH33 pH Meter has an accuracy of 0.01 pH and features flat sensor technology which allows for a convenient, extremely easy testing process. This product requires only a few drops of the solution put onto the ph electrode to be able to accurately read the pH value. Instead of immersing the pH meter in the solution, users can also place a small sample directly onto the ion selective membrane and get the results instantly displayed on the LCD screen.
Horiba LAQUATwin pH33 pH Meter also features an easy calibrating process. With the touch of a single ‘cal’ button the user can easily calibrate the device with the help of the calibrating solutions that accommodate the product.
- Measuring Range: 0-14 pH
- Advertised Accuracy: 0.01 pH
- Automatic Temperature Compensation
As a bonus, Horiba is offering a 1 year warranty on the pH Meter (B-213). All these extra features, combined with the high accuracy as well as the ease of use is also reflected by the price tag which is relatively high – doesn’t change the fact that this is definitely close to the best pH meter available.
One of the best pH Meters for Water
When it comes to the best pH meters specifically for water testing, theres one meter that simply blows all other ph meters out of the water (no pun intended). I’m of course talking about the WTW ProfiLine pH 3310 pH meter. It’s one of the most durable and rugged pH meters in the industry and it’s specifically made for testing the pH of water.
It’s waterproof all the way down to about 300 ft. and it’s auto-calibration feature makes sure that your readings always are accurate. On top of that this meter has a range of -2 to 20, which means that no matter the solution your testing you’ll be able to record the pH onto the 200 step datalogger.
This product is truly one of the very best pH meters on the market, especially for testing the pH of water. Get one of these and your set on that front for life.
$1,642.40
Amazon.comIf you’re ready to get going with your newly acquired pH meter but have no idea how to actually use it, here’s a handy YouTube video explaining the basics.
We hope that you have enjoyed our listing of the best pH meters/pH probes of 2021, and are one step closer to deciding which pH meter is the right one for you. Remember that for water quality testing, pH is not the only factor and you should look into TDS meters as well.
