Digital PH Meter for water 2020 (review & guide)

We all know all the benefits that come with drinking water that PH level is higher than regular water but how do you ensure your water PH level is at the recommended levels. This can only be done by testing water using Digital PH meter for water.

Digital PH meter for water

The 10 best Digital PH Meter for water

 NameImagespecificationAvailable at
1Koolamo Digital PH Meter Measure Range: 0.00 - 14.00 pH, Resolution: 0.01 pH, Accuracy : ± 0.01 pH Automatic Temperature Compensation: 0°C - 50°C (32°F - 122°F), Automatic Calibration Button, Power Supply: Batteries: 2X 1.5V LR44 (included)Amazon
2Penta beauty PH MeterMeasure Range: 0.00 - 14.00 pH, Resolution: 0.1 pH, Accuracy : 0.01 pH, Automatic Temperature Compensation: 0°C - 80°C (32°F - 176°F), Automatic Calibration Button, Power Supply: Batteries: 2X 1.5V LR44 (included)Amazon
3Dr.meter Pocket Size pH Meter  Measure Range: 0.00 - 14.00 pH, Resolution: 0.01 pH, Accuracy: 0.01 pH, Automatic Temperature Compensation, Three Points Automatic Calibration Button, Power Supply: Batteries: 4 LR44 batteries (included)Amazon
4KETOTEK Digital PH MeterMeasure Range: 0.00 - 16.00 pH, Resolution: 0.01 pH, Accuracy: 0.01 pH, Automatic Temperature Compensation, Automatic Calibration Button, Power Supply: 2*1.5V (LR44 Button cell) (Included)Amazon
5WeekStar Digital Pocket Size PH MeterMeasure Range: 0.00 - 14.00 pH, Resolution: 0.01 pH, Accuracy: 0.01 pH, Automatic Temperature Compensation-0°C - 80°C (32°F - 176°F), Automatic Calibration Button, Power Supply: Batteries: 2X 1. 5V LR44 (includedAmazon
6Poit Digital PH Meter Tester KitMeasure Range: 0.00 - 14.00 pH, Resolution: 0.01 pH, Accuracy: 0.05 pH, Automatic Temperature Compensation, Automatic Calibration Button, Power Supply: 2*1.5V (LR44 Button cell) (Included)Amazon
7Apera Instruments AI209 Value Series PH20 Waterproof pH Tester KitMeasure Range: 0.00 - 14.00 pH, Resolution: - pH, Accuracy: 0.1 pH, Automatic Temperature Compensation: 0°C - 50°C (32°F - 122°F)1-3 Points Automatic Calibration Button, Power Supply: Batteries: AAA (Up to 2000 hours' continuous operation)Amazon
Walmart

8Bluelab PENPH pH Pen Fully Waterproof Pocket Tester  Measure Range: 0.00 - 14.00 pH, Resolution: 0.1 pH, Accuracy: 0.1 pH, Automatic Temperature Compensation, Two Points Automatic Calibration Button, Power Supply: Batteries: AAAAmazon
Amazon

9LIUMY Water Quality Tester 2 in 1 Set, PH & TDS Water TesterMeasure Range: 0.00 - 14.00 pH, Resolution: 0.01 pH, Accuracy: 0.01 pH, Automatic Temperature Compensation, Automatic Calibration Button, Power Supply: 2*1.5V (LR44 Button cell) (Included)Amazon
10Water Quality Test Meter Pancellent TDS PH EC Temperature 4 in 1 KitMeasure Range: 0.00 - 14.00 pH, Resolution: 0.01 pH, Accuracy: 0.01 pH, Automatic Temperature Compensation-0°C - 60°C (32°F - 140°F), Automatic Calibration Button, Power Supply: 2*1.5V (LR44 Button cell) (Included)Amazon
Amazon

11VIVOSUN pH and TDS Meter ComboMeasure Range: 0.00 - 14.00 pH, Resolution: 0.01 pH, Accuracy: ± 0.05 pH, Automatic Temperature Compensation: 0 - 60 ℃ / 32 - 140 ℉, Three Points Automatic Calibration Button, Power Supply: 2 x 1.5V LR44 Button Battery (keep using more than 500 hours)Amazon

There are three methods of measuring Water PH levels. This include:

  • PH meter
  • PH Test Liquid/drop
  • PH test strip

The above three methods the only method that gives you an accurate result that is easy to understand is using a digital meter.

In this article, we are going to discuss Best Digital PH Meter for water

What is a water PH meter?

A PH meter is a device that has a sensitive Electrode Sensor to Read Accurate PH Levels

How to use PH meters

  • Remove the protective cap
  • Put the PH meter electrode in the water,
  • Press the button to be measured
  • Stir the water gently, 
  • The stabilized result will be displayed on the LCD screen in seconds.

Top Picks in 2020

  1. Koolamo Digital PH Meter 
  2. Penta beauty PH Meter
  3. Dr.meter Pocket Size pH Meter  
  4. KETOTEK Digital PH Meter
  5. WeekStar Digital Pocket Size PH Meter
  6. Poit Digital PH Meter Tester Kit
  7. Apera Instruments AI209 Value Series PH20 Waterproof pH Tester Kit
  8. Bluelab PENPH pH Pen Fully Waterproof Pocket Tester  
  9. LIUMY Water Quality Tester 2 in 1 Set, PH & TDS Water Tester
  10. Water Quality Test Meter Pancellent TDS PH EC Temperature 4 in 1 Kit
  11. VIVOSUN pH and TDS Meter Combo

11 Best PH meters reviews

1. Koolamo Digital PH Meter 

Available at:

PH meter Summary

  • Measure Range: 0.00 – 14.00 pH, Resolution : 0.01 pH, Accuracy : ± 0.01 pH
  • Automatic Temperature Compensation: 0°C – 50°C (32°F – 122°F)
  • Automatic Calibration Button 
  • Power Supply: Batteries: 2X 1.5V LR44 (included)

The PH meter has built-in auto Temperature Compensation Feature That Adjusts to Water Temperatures and Water Quality to Give Ph Readings Almost Instantly.

You can easily calibrate the device with One-Touch Button Using Buffer Powder. 

It is 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

The package includes 1-PH meter, user manual, carrying case, 2x 1.5V LR44 battery, 3x PH Buffer Powders

Koolamo Digital PH Meter

Available at:

The Koolamo digital PH meter come factory calibrated but you are required to calibrate after frequent use or long period of inactivity.

For calibration, you are required to push the auto-calibration button and come with a 3-pack of calibration liquids.

It has built-in automatic temperature compensation (ATC) 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)

The device is pocket-size therefore allows you to carry it around easily in your pocket and do your measuring anywhere.

It is ideal use to test for water, pools, aquariums, spas, hydroponics, food, wine and beer making

The tester features an automatic shut-off after 5-minutes of inactivity.

The package includes 1-PH meter, user manual, carrying case, 2x 1.5V LR44 battery, 3x PH Buffer Powders

2. Penta beauty PH Meter

Available at:

summary

  • Measure Range: 0.00 – 14.00 pH, Resolution : 0.1 pH, Accuracy : 0.01 pH
  • Automatic Temperature Compensation: 0°C – 80°C (32°F – 176°F)
  • Automatic Calibration Button 
  • Power Supply: Batteries: 2X 1.5V LR44 (included)

The Penta beauty has an auto temperature compensation feature that adjusts to water temperatures and water quality to give pH readings almost instantly.

You can calibrate the meter with a one-touch button using calibration buffer powder.

It is ideal for use at home and laboratory for testing pH balance of drinking water, pool, aquarium, RO system, Spa, or hydroponics. 

The package includes 1-PH meter, user manual, carrying case, 2x 1.5V LR44 battery, 3x PH Buffer Powders

3. Dr.meter Pocket Size pH Meter  

Available at:

Summary

  • Measure Range: 0.00 – 14.00 pH, Resolution : 0.01 pH, Accuracy : 0.01 pH
  • Automatic Temperature Compensation
  • Three Points Automatic Calibration Button 
  • Power Supply: Batteries: 4 LR44 batteries (included)

Dr.meter features a three-point automatic calibration method with just touch of one button.

It also features an automatic temperature compensation function (ATC) that help solve possible inaccuracy caused by the change of liquid temperature, making the pH more accurate.

The device is suitable for testing the pH of drinking water, swimming pool, aquarium, spa, hydroponics, food, wine, beer making, and more.

It uses 4 LR44 batteries required. (included)

More Dr.meter

Dr.meter Upgraded PH838 0.01

The difference with the above features automatic temperature compensation function (ATC) at a range of 0-70 degrees.

It has a large backlit display and alerts in a different color 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.

This model uses 2 AAA batteries

4. KETOTEK Digital PH Meter

Available at:

summary

  • Measure Range: 0.00 – 16.00 pH, Resolution : 0.01 pH, Accuracy : 0.01 pH
  • Automatic Temperature Compensation
  • Automatic Calibration Button  
  • Power Supply: 2*1.5V (LR44 Button cell) (Included)

The KETOTEK Digital PH Meter can test the PH value for any 0-16PH liquid such as drinking water, swimming pools, aquariums, hydroponics, wine, and beer.

It features AUTOMATIC TEMPERATURE COMPENSATION (ATC) with operating temperature 0°F – 140°F and you can easily calibrate with just pressing the button.

The PH meter uses 2*1.5V (LR44 Button cell) which is included and features an automatic shut-off after 5minutes with inactive

The package contains 1×PH meter, 2×PH buffer powder and 1×User’s manual

5. WeekStar Digital Pocket Size PH Meter

Available at:

summary

  • Measure Range: 0.00 – 14.00 pH, Resolution : 0.01 pH, Accuracy : 0.01 pH
  • Automatic Temperature Compensation-0°C – 80°C (32°F – 176°F)
  • Automatic Calibration Button  
  • Power Supply: Batteries: 2X 1. 5V LR44 (included

It 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).

This meter comes with a handy storage case, PH meter, user manual, 2x 1. 5V LR44 battery (built-in), and 3 Buffer Powders.

The best PH meter for testing PH in aquarium, water, pools, spas, hydroponics, food, wine and beer making

6. Poit Digital PH Meter Tester Kit

Available at

summary

  • Measure Range: 0.00 – 14.00 pH, Resolution : 0.01 pH, Accuracy : 0.05 pH
  • Automatic Temperature Compensation
  • Automatic Calibration Button  
  • Power Supply: 2*1.5V (LR44 Button cell) (Included)

This PH meter is factory calibrated and when in the problem you calibrate to solve the problem.

It has ATC function and package come with ph meter, carrying case, user manual, 2x 1.5V LR44 button cells (build-in), 3x PH Buffer Powders

Waterproof PH meter

Waterproof PH meter

7. Apera Instruments AI209 Value Series PH20 Waterproof pH Tester Kit

Available at

summary

  • Measure Range: 0.00 – 14.00 pH, Resolution : – pH, Accuracy : 0.1 pH
  • Automatic Temperature Compensation: 0°C – 50°C (32°F – 122°F)
  • 1-3 Points Automatic Calibration Button 
  • Power Supply: Batteries: AAA (Up to 2000 hours’ continuous operation)

The Apera PH tester provides reliable and quick PH measurements for water solutions such as hydroponics, horticulture, pools and spas, beverage making, education, aquarium and aquaculture, water treatment, and environmental monitoring.

It features easy automatic calibration with 1, 2, 3 buffer recognition, and automatic temperature recognition.

It has built-in automatic temperature compensation (ATC) so that it can accurately determine the pH value of the sample at any temperature in a range of 32 to 122F

The tester uses AAA battery which lasts up to 2000 hours of operation. When the battery is low you are notified by alarm and also features automatic power off if no operation for 8-minutes.

This tester provides PH and temperature measurement in (F or C).

When it comes to result display, the tester shows both PH and temperature results simultaneously on a large clear LCD along with a stable reading indicator and completed calibration icons. The smiley icon indicates stable readings so you won’t have to guess when is the right time to record the measurements

Looking for a water-resistant PH tester look no further Apera tester is a good choice so you don’t have to worry when the device falls in water that will no longer work.

It has a regular glass probe type and the product is CE and RoHS.

The package includes a calibration solution, 4 AAA battery, user manual, and carrying case.

More Apera tester

Apera Instruments AI311

Available at

The Apera Instruments AI311 measures PH, Temperature, and ORP

It recognizes 5 type of calibration solution (1.68, 4.00, 7.00, 10.01, and 12.46).

The kit contains READY-TO-USE calibration solutions, calibration bottles, storage solutions, AAA batteries, and a lanyard all in a rugged portable case.

The product features high-quality replaceable glass pH probe

8. Bluelab PENPH pH Pen Fully Waterproof Pocket Tester  (glass probe, fully waterproof, two-point calibration and calibration reminders)

Available at:

summary

  • Measure Range: 0.00 – 14.00 pH, Resolution : 0.1 pH, Accuracy : 0.1 pH
  • Automatic Temperature Compensation
  • Two Points Automatic Calibration Button 
  • Power Supply: Batteries: AAA

The Bluelab PENPH pH Pen features two-point calibration and auto temperature compensation.

It also features full waterproof, auto-off function (automatically turns off after 4 minutes), low battery indicator, units for temperature backlit LCD, and calibration reminders. This meter is set up to tell you it’s time to recalibrate.

The package includes AAA battery, lanyard, and calibration solution (1x 20ml sachet of pH7 solution, 1x 20ml sachet of pH4 solution, and 1x 20ml sachet of KCl storage solution).

This product measures PH at a range of 0-14 and temperature and gives temperature results in C&F.

The Bluelab PENPH pH Pen has a quality glass probe that is used to test water for the pool, drinking water, hydroponics, and brewing.

The glass probe tip must be kept moist.

How to store Bluelab PENPH pH Pen

 Add 3-5 drops of KCl storage solution into the wetting seal inside the storage cap once a week. Never use RO, Distilled, or De-ionized water. Place the seal and cap over the probe tip.

 LONG TERM STORAGE

 For long term storage, remove the cap and place the pen upright in a plastic container. Cover the probe tip with KCl storage solution to ensure constant hydration. Check the container regularly and top up the KCl storage solution as needed.

 IF THE PROBE HAS BEEN ACCIDENTALLY ALLOWED TO DRY OUT:

 The probe must be `hydrated’ for 24 hours in KCl storage solution (never use RO, Distilled, or Deionised water). Following this; carry out calibration to check if the probe has already suffered permanent damage.

pH and TDS Meter Combo

PH and TDS Meter Combo

9. LIUMY Water Quality Tester 2 in 1 Set, PH & TDS Water Tester

Available at:

summary

  • Measure Range: 0.00 – 14.00 pH, Resolution : 0.01 pH, Accuracy : 0.01 pH
  • Automatic Temperature Compensation
  • Automatic Calibration Button  
  • Power Supply: 2*1.5V (LR44 Button cell) (Included)

TDS meter summary

  • PH resolution is 0.01pH
  • Accuracy ±0.01pH
  • TDS:0~9990ppm
  • Conducitivity:0~9990us/cm
  • Accuracy:±2%

The LIUMY tester is 2 in 1 set. The meter and TDS meter. It can measure TDS, PH, Electrical Conductivity (EC), and Liquid Temperature in Fahrenheit or Degree Celsius. 

The TDS meter has automatic temperature compensation and backlight function while PH meter has automatic temperature compensation and no backlight function.

This tester has an auto power-off to save battery life.

It can be used in wide applications or used to test the wine, water, juice, aquarium, swimming pools, and spa.

The meter can measure PH at a range of 0.00 to 14.00 and displays the result on a large display screen

In the pack include PH meter, TDS meter, 3-calibrated powder (6.68; 4.01; 9.18), built-in battery, and TDS package.

10. Water Quality Test Meter Pancellent TDS PH EC Temperature 4 in 1 Kit

Available at:

summary

  • Measure Range: 0.00 – 14.00 pH, Resolution : 0.01 pH, Accuracy : 0.01 pH
  • Automatic Temperature Compensation-0°C – 60°C (32°F – 140°F)
  • Automatic Calibration Button  
  • Power Supply: 2*1.5V (LR44 Button cell) (Included)

TDS meter summary

  • PH resolution is 0.01pH
  • Accuracy ±0.01pH
  • TDS:0~9990ppm
  • Conducitivity:0~9990us/cm
  • Accuracy:±2%

The Pancellent test meter is a combo of PH tester and TDS&EC tester.

The PH pen has AUTO CALIBRATION function, Lock & auto shut off function.

It is Ideal for Home and Laboratory for PH testing including Drinking Water, Electroplating Liquid, Boiler Water, Water in Fish Tank, Water of Swimming Pools, Photograph Flushing Fluid, Well Water, Deep Phreatic Water, Aquaculture, Food Processing, and More.

Package includes PH meter, TDS meter, user manual, and 6xcalibration 

11. VIVOSUN pH and TDS Meter Combo

Available at

PH meter Summary

  • Measure Range: 0.00 – 14.00 pH, Resolution : 0.01 pH, Accuracy : ± 0.05 pH
  • Automatic Temperature Compensation: 0 – 60 ℃ / 32 – 140 ℉
  • Three Points Automatic Calibration Button 
  • Power Supply: 2 x 1.5V LR44 Button Battery (keep using more than 500 hours)

TDS meter summary

  • Conductivity: 0 – 9990 µs/cm
  • TDS: 0 – 9990 ppm (parts per million)
  • Degrees Celsius: 1.0 – 80.0°C Fahrenheit: 32.0 – 176.0°F
  • Accuracy: 2%
  • Net weight: 51g
  • Size: 154 x 30 x 14 mm

The VIVOSUN pH and TDS Meter Combo is great for home and laboratory testing applications including swimming pool and aquariums.

The PH meter could measure PH and temperature value while TDS meter is 3-in-1 that include EC, TDS and Temp function.

It comes with a protective case that is lightweight and handheld design making it easy for portability and convenience.

It can be used in all water testing situations such as Water Purification Applications, Aquaculture, Hydroponic, Pool & Spa, Colloidal Silver, Water Treatment, and more.

This TDS meter had been calibrated by the manufacturer in advance using a 1413 solution you can use for 1-year without second calibration, so calibration liquid is not included.

The VIVOSUN pH and TDS Meter displays result in 4-modes TDS – ppm & °C, EC – µs/cm & °C, TDS – ppm & °F, EC – µs/cm & °F.

It uses 2 x 1.5V LR44 Button Battery that lasts 500 hours and features 9 minutes auto shut-off so the battery won’t run down.

This meter measures 154 x 30 x 14 mm and weighs 15g which pocket-size making it is easily portable.

More

Digital PH Meter, WECHIC

How should it be stored when not in use? Dry or in a solution?

how to store Ph meter

Rinse the PH meter after every use with distilled water

Dry it off using filter paper/ paper towel /clean soft cloth

 Replace the protective cap to keep electrode from drying out

Store in case if it comes with it.

You do not need to store it in solution

How do you know it’s time to replace the battery?

PH meter requires the battery to operate. When the meter cannot be turned on or LCD/screen fades then it is the time to replace the battery.

How to calibrate the digital PH meter

  • Prepare 3 containers where to add buffer solution (pH 4.00 solution, pH 6.86 solution, and a pH 9.18 solution)
  • · Dissolve each calibration buffer solution in 250 ml of distilled water
  • · Turn on the pH meter
  • · Immerse the electrode into the pH 6.86 solution (under the temperature of 25℃)
  • · Press the “CAL” (calibration) button for 5 seconds and release
  • · Display screen will start flashing “6.86”
  • · Wait for it until the display screen stops flashing.
  • · Rinse the electrode with distilled water and make it dry with filter paper.
  • · Repeat the above steps with 4.01 pH buffer powder and 9.18 pH buffer powder.
  • · The digital device is ready for use.

Bonus video DIGITAL PH METER CALIBRATION

How to measure PH value using PH meter

  • Remove the protective cap from the pH meter.
  • Put the electrode into distilled water
  • Slowly stir it for 5-10 seconds, then take out the pH meter and dry it.
  • Press the ON/OFF button to turn on the unit. 
  • Dip the electrode in the water you want to test making sure the whole electrode is submerged.
  • Stir gently and wait for the value to stabilize. 
  • The LCD screen will display both the temperature and PH.

How often should you calibrate the PH meter

For the first users if your meter had been calibrated by the manufacturer in advance you do not need to calibrate it but if not you need to calibrate before use. Use the steps above.

Calibrate once per week if you often test solution of PH 10, or once per half month for neutral solutions.

Rinse the electrode with pure water before the next test. 

Rinse and rest 3-5 min before conversing from strong acid to strong alkaline and vice versa.

Don’t exceed the immersion line when testing.

Please Ensure There Is No Water In PH & TDS Meter After Use, Otherwise They Will Rust. Use filter paper or clean soft cloth to gently wipe it before capping

Before buying PH meter you should consider the following factors

Accessories needed

Digital PH meter

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