Best pH meter for water

 

pH meters for water – Buying guide & Comparison

 

If you want to get the best pH meter for water, and you don’t have any time to waste reading product reviews, this short paragraph is here to help you make a good buying decision. After looking at what the market has to offer, we have concluded that the Apera Instruments AI209 Value Series PH20 Waterproof pH Tester offers the quality and performance that most users need. This is a complete kit with ready-to-use auto-calibration solutions so that you can start testing right away. It is powered by AAA batteries, and the meter can deliver up to 2,000 hours of continuous runtime. As far as accuracy is concerned, this option can deliver reliable measurements in various temperatures from 32 to 122 degrees Fahrenheit. In the unfortunate event that our first pick is out of stock, we recommend that you give the VIVOSUN pH and TDS Meter Combo a look.

 

 

Comparison table

 

 

 

Being able to find the best water pH meter is not going to be an easy task. With so many brands and models that you have to scrutinize and research about, making a purchasing decision will not be a simple thing. We have outlined in our buying guide the exact points of consideration when making this kind of investment.

 

Easy use

It won’t do to simply settle for any product in the many water pH meter reviews. You will need to know how easy the digital device will be to use. The instructions in the user manual will help if they are clear and to the point. However, much depends on how the instrument itself is designed to be easy to use.

A large, easy-to read LCD screen facilitates viewing of the measured values. Ideally, you should be able to read the values regardless of the viewing angle. If the device has a data-hold function, it will make reading and recording easier, especially when you are testing for monitoring purposes.

Since plenty of digital pH meters measure not just the acidity and alkalinity of water, toggling from one parameter to another should be easy to do.

You should be able to obtain a reading in minutes, with some high-quality models providing one in just seconds.

A lightweight device will be easy to operate with one hand. Compare that to using conventional test strips and a color chart, and you would quickly shift to digital models too. You should be able to operate the device with just one hand. Just immerse the probe or electrode into the solution or water then wait for the reading to stabilize. It’s that simple!

A backlit LCD screen allows you to do testing even when lighting conditions are not ideal. For easy portability and storage, a carrying case offers convenience.

 

Reliability of results

A good pH meter ensures repeatable, consistent accuracy. If you can, find a model that has a slim margin of error or accuracy range, such as ±0.01 to ±0.02. This will ensure reduced erroneous values, which is critical especially when the solution is really pH sensitive.

Oftentimes, any slight variances in pH affect the quality of the liquid being tested. It could influence the taste, usability for making mixtures, and even safety for drinking. That is why the margin of error should be very narrow.

You will want a wide measuring range despite a limited accuracy range. This aspect will enable you to ensure that readings are not limited to a low value. It will also ensure greater measuring potential for various liquids.

Check out units offering Automatic Temperature Compensation. This detail ensures the tool can read values effectively even when the temperature of the test liquid is not constant or standard. The feature enables the tool to compensate for any temperature change and proceed to deliver a precise reading. This point ensures stability.

You might even find devices that remind you when it’s due for re-calibration. This is vital since you wouldn’t want to be getting errors in values.

The tool should also operate on batteries for extended periods, giving you countless hours of use.

 

Versatility and functionality

Any pH meter for sale should be ready to do its job right out of the package. While many models need to be calibrated at the onset, the process is usually easy. After that, it’s ready to go before the next re-calibration. A lot of ph meters measure not only the acidity and alkalinity of liquids but also their temperature, electrical conductivity (EC), and even total dispersed solids (TDS), which is essential for testing purity or concentration.

You should be able to switch from one mode to another with push-button simplicity. Some units are equipped with an auto calibration feature with buffer recognition. Calibration solutions simplify the initialization process.

You would want the device to enable you to use it for a variety of applications.

 

A bit more about precision 

If you are not familiar with using a pH tester, then you should know that these meters are available in three main types of construction, namely the benchtop one, the portable handheld models, and the pen-style units. With this being said, the benchtop products are usually the most precise, but they are also more expensive and less mobile, so they are not suitable for anyone. 

However, it’s true that precision is exactly what you need from such a pH tester, whether you are working in a lab or not. The great part about pen-style and handheld models is that anyone can use them, thus improving many processes in our lives, even if we’re talking about someone who simply wants to obtain better results when it comes to gardening. 

Specialists who are working in a lab or professional conditions and want to obtain extremely accurate results for a specific purpose, such as brewing, need to look for a unit that comes with at least +/- 0.01 pH units. However, for general needs, meters that offer a +/- 0.1 pH unit variation can work very well as well. It all depends on what you are trying to achieve. 

 

Calibration

Calibrating the unit is also very important since you want to make sure that you get the most accurate results possible every time you are using it. This principle applies whether you are working in a lab or not, so once you get such a device, you need to make sure that you know how often it needs to be calibrated and, more importantly, how to properly do this. 

When it comes to calibration, there are two different ways in which this can be done, namely either automatic or manual. The process depends on the type of device you have as well, so make sure that you carefully read the instructions provided within the package or issued by the manufacturer. 

The manual calibration means that you will need to adjust two knobs after the probe is placed in the right calibration buffer. However, if you have a device that includes automatic calibration, then the process is much easier. If you are planning to use one of these meters for soil pH measurements, it’s a good idea to see if there is any particular method in order to do the calibration in the right way. 

In case you are noticing any issues when it comes to this process, you can always look for more information online on these meters and see if there’s something that you should be doing differently. If you cannot seem to figure it out, asking the manufacturer for details is the way to go. This way, you’ll know whether you have a unit that doesn’t work properly, and thus you can get a refund or a new one. 

However, if you go for a high-quality product, this should not be an issue. Next, you also want to see what you are supposed to do in order to maintain it throughout time, as this process definitely helps you get more use out of it. For instance, if you are using your tester for soil, you will need to clean it after each use and make sure that everything is in order before storing it. 

How often should a pH meter be calibrated? 

Going through the calibration process is what makes pH meters reliable, so this is not a step that you want to skip. With this being said, the answer to the question above depends on a few factors that you should bear in mind as you are getting ready to use your device. 

To begin with, pH testers should be calibrated before each use, and this is especially important when it comes to highly accurate ones used in particular settings, such as a lab. For general use, if you are planning to test the soil for your garden, you can do this process every week. 

The answer here can also depend on how often you are using the meters, given that this can greatly influence both their lifespan and their accuracy. 

Just like any other product, pH meters do need to be replaced after a while. Therefore, if you are planning to use yours on a daily basis, which is something that can have an impact on their components, such as the electrode, then you need to pay attention to how you calibrate them and ensure their overall maintenance. 

There are some particular cases when calibration is definitely necessary, such as those times when an electrode has not been used for a long time. If you’ve stored your device for a while, then you definitely want to make sure that it still works the way it should. The same principle applies if the unit is new and you are using it for the first time. 

Along the same lines, you want to calibrate your pH tester if you’ve measured a strongly acidic solution or a strong base with its help. While this may not be the case if you are using it for soil, it’s surely a good idea to make sure that the electrode is working properly after stronger testing. 

Moreover, if there’s a big temperature difference between the item you are testing and the buffer, you should do the calibration process once you are done or before using the tester again, as this can influence its accuracy for future readings. 

 

Temperature correction 

Depending on whether you work in a lab or not, getting accurate readings can be quite important, so you want to make sure that varying temperatures won’t affect the results. Most pH meters include temperature compensation, which is always a useful feature. 

However, you want to make sure that you also know the sample’s temperature as well, no matter if we’re talking about soil or something else. This way, you will be able to get even more accurate readings, given that you will be able to properly calibrate the meter. 

While some may say that temperature compensation is an overrated feature, the truth is that it can be quite helpful in many situations, especially if you are still rather new to using this type of meter. Moreover, no matter if you are simply testing soil samples for your garden or you work in a professional lab, getting results that you can rely on is the main goal to make your efforts worthwhile. 

 

 

5 Best Water pH Meters (Reviews) in 2024

 

Finding a good-quality pH meter can be tedious. Faced with countless options on the market, the buyer will have to do their own research and evaluation of which would be a suitable product to address their needs. We have featured what we believe are top notch performers in the field.

 

 

1. Apera Instruments AI209 Value Series PH20 Waterproof pH Tester 

 

This model strikes a good balance between affordability and quality since it comes with all the features that are needed to get reliable and quick pH measurements, and it is available for a good price. It is designed for general water solutions’ pH testing such as water treatments, hydroponics, horticulture, pools and spas, and so forth.

It is very easy to use since the unit comes with an auto-calibration feature, which makes the entire process easier to follow even for first-time users. The meter is powered by AAA batteries that can deliver up to 2,000 hours of continuous operation.

As far as accuracy is concerned, you won’t have to worry since this model uses the Apera proprietary high-sensitivity glass-bulb pH sensor that can deliver high accuracy and fast response. The Auto Temperature Compensation feature will keep the measurement accurate in various temperatures, and it allows the unit to deliver fast and stable readings.

 

Pros

It lets you switch between standard pH series, USA or NIST, as well as between Fahrenheit and Celsius temperature units.

The large and clear LCD screen displays the temperature and pH reading simultaneously, and it is easy to tell when you’ve got a stable reading since a smiley face will appear to notify you.

The durable design of this meter is iP67 water-resistant, which means that it can handle heavy use in a wide variety of environments.

It is very easy to calibrate since the built-in self-diagnosis function will tell you what can go wrong during calibration and will give you suggestions so that you can fix any issue that may arise.

 

Cons

To get an accurate reading for saltwater tanks, you will need to purchase the 10 testing solution that does not come with this kit.

The pocket clip that’s integrated with the battery compartment cap is flimsy and incapable of securing the weight of the tester.

 

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2. VIVOSUN pH and TDS Meter Combo 

 

You will get a pH meter that can be used successfully in reading the water’s pH levels in an aquarium or swimming pool. The range goes from 0 to 14, so it covers all the possible values; at the same time, it is reliable, and you will get fast, accurate readings from it.

With the pH meter, you will also receive a 3-in-1 TDS with a measurement range of 0 to 9990ppm, or 0 to 9990µs/cm. Its accuracy is ±2%, which means that it’s pretty precise. The temperature range is 0.1C to 80C, or 32F to 176F.

This combo is delivered in a protective case, so you will be able to keep it in perfect conditions when not in use. The ergonomic design of the units makes them easy to manipulate, and you will find many applications for which they can be used. Testing water quality has never been this easy.

 

Pros

The pH meter comes with a lock function, which means that you won’t have to worry that other factors could have influenced the result you’re reading.

Portability is one of the most significant advantages offered by this combo, as the equipment is lightweight and has an overall ergonomic design.

You will get a protective case with your purchase so that your water quality testing gear doesn’t suffer any damage.

There are plenty of applications you can use this combo for, such as water purification, swimming pools, water treatment, hydroponic, and aquaculture.

Its 9-minute automatic shut off function makes sure that the battery won’t go to waste.

 

Cons

As stated by the manufacturer, there is no calibration powder included; since it’s expensive, this can be a disadvantage.

Also, the pH meter might cause trouble by refusing to remain calibrated, and that means that you will have to work on it before each use.

 

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3. Apera Instruments AI311 Premium Series PH60 Waterproof pH Tester 

 

This model is designed for professional pH measurements since it uses a very accurate sensor that delivers a margin of error of just ±0.01 pH, with a range of -2.00 to 16.00 pH and 32 to 122 degrees Fahrenheit. It delivers results instantly without compromising accuracy.

It has a rugged IP67 water-resistant rating, and the exterior shell is rugged enough to handle operation in harsh environments and conditions. Even if the probe gets damaged, you won’t have to purchase another product since the probe is easily replaceable to help you save money in the long run.

Apera Instruments also offers plenty of different sensors that are compatible with this model so that you can use the product to test the pH of flat surfaces or food. Furthermore, it is very easy to tell when you’ve got a stable reading since a smiley icon will appear on the screen, so you won’t have to guess when is the right time to record the measurements.

 

Pros

The large LCD is easy to read, and it has three backlit colors that will indicate which mode is activated, blue for measurement, green for calibration, and red when the readings are out of range.

It is powered by four AAA batteries that come included in the package, and they help deliver up to 2,000 hours of runtime.

The probe sensor is replaceable, and you have a wide variety of compatible probes that you can get to improve the performance and functionality of the meter.

The kit comes with two calibration solutions, two calibration bottles, a storage solution, and a rugged carrying case that’s designed to protect the meter and its accessories.

 

Cons

The calibration and storage solutions that come in the package are very small, and ordering replacements is quite costly.

The meter is water-resistant, but you will still need to be careful with it since it is not submergible, it can only survive splashes and humid environments.

 

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4. Bluelab PENPH pH Pen Fully Waterproof Pocket Tester 

 

This model is an accurate piece of equipment that features a fully waterproof construction that, with proper care, will last you for a very long time. As is the case with all pH meters, these devices are very sensitive, and misuse can throw off your calibration. Thankfully, the care guide that the product comes with is very informative and easy to understand.

The two-point calibration process is quick, reliable, and easy. The Auto Temperature Compensation feature will help deliver more accurate results even if the temperature of the liquid fluctuates. This is achieved thanks to the lab quality glass probe that can be used for testing drinking water, pool, hydroponics, brewing, and more.

It is also easier to read the results from this professional digital pH meter since if you’re already working with water that is full of nutrients, you won’t have to worry about not being able to judge the color of the pH solution.

 

Pros

This option can make the daily maintenance of your garden, pool, or aquarium a breeze, and it will save you a lot of money since you won’t have to purchase endless pH strips.

It uses a very simple user interface that is intuitive to use even without reading the instructions since a large LCD screen displays all the information in large digits.

The calibration will last you for months, and even if you do need to calibrate it again, the entire process takes only about two minutes.

Bluelab is one of the industry leaders in hydroponic testing equipment, which means that you can trust their products to deliver reliable results and performance.

 

Cons

If the cap sits on the meter for more than a day, it becomes difficult to get it off.

Similarly to other PH pens, if the sensor is not kept wet, it can get ruined.

 

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5. HM Digital HMDPHM80 Digital pH/Temperature Meter 

 

If you’re in the market for an affordable pH meter, this economically-priced alternative manages to deliver reliable results, and it is versatile enough to handle a wide variety of testing applications. It has a sleek and lightweight design that is water-resistant, and it can be used in severe conditions and environments.

It measures not only pH but also temperature, and this allows it to compensate automatically and deliver accurate results no matter the temperature of the liquid. The package comes with a storage solution and a single-use pH 7.0 buffer pack that will improve the accuracy of the meter.

The pocket-size of this model enables you to test any liquid on the go, such as drinking water, water in swimming pools, water tanks, hydroponics systems, and more. It is very reliable and surprisingly easy to use even by first-time users. It runs on three LR44 batteries, and they all come included in the box.

 

Pros

The screen is large enough to be easy to read, and it features large digits so that you can see the information that’s displayed on it without having to go and get your glasses.

The unit has an automatic digital calibration button that will make sure that each reading is as accurate as possible.

The data-hold function lets you store the last reading on the display for longer, and you won’t have to worry about the battery draining since the auto-off function will turn off the meter once you’re no longer using it.

The Automatic Temperature Compensation technology helps the meter deliver reliable readings even when the water temperature has changed.

 

Cons

It requires proper storage in a buffer solution, which will eventually evaporate, so make sure to have a replacement ready.

The accuracy of the meter starts to go down relatively quickly, so you’ll need to calibrate it frequently, but thankfully the process only takes a few minutes.

 

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Frequently Asked Questions 

 

Q: What is a pH meter for water and how do I use it?

A typical pH meter includes two main components, namely the meter itself and the digital element. The first one usually features a simple construction, given that it’s a moving-coil meter, while the digital part includes a display that shows the results. Given that pH meters use electricity principles to test your sample, you have to create an electrical circuit. 

This is done by creating an electrical flow using the test solution, and you can easily do this by putting each electrode in it. If the pH meter you choose has two probes, then each one features a different electrode, while more compact units come with two electrodes built inside. 

In terms of usage, a pH meter is very easy to handle, and all you need is the sample and the device. No matter the model you choose, you should always read the instructions and make sure the unit is properly calibrated, even if you are simply using it to test some soil. 

Q: How is pH measured?

A sample’s pH is measured using some simple principles of electricity. The device needs to measure the hydrogen ions concentration in the probe in order to identify its pH. The idea behind this process is quite simple. If you are measuring an acidic solution, then there are more hydrogen ions that are positively charged than in the case of an alkaline one. 

This means that the solution or sample has more chances of producing an electrical current, given certain circumstances. Those of you who are familiar with the way batteries work can think of this as producing greater voltage. 

A pH tester acts pretty much like a voltmeter, by measuring the electrical potential (or voltage) of a solution using the electrode and then comparing it with that of an already known one. Then, it uses the difference between the two to figure out what the difference in pH is. That’s why properly calibrating the device is a very important process. 

 

Q: What is the pH of pure water?

The pH value is actually a very good indicator of whether you should drink water from a certain source or not, given that it says if it’s soft or hard. When it comes to the pH of pure water, this is 7, so you can keep this in mind as a reference point. 

Water with a pH lower than 7 means that it’s acidic, while water with a pH that goes over 7 means that it’s basic. Water that comes from surface sources has a normal pH range that goes between 6.5 and 8.5, while that extracted from underground systems has a pH range that goes from 6 to 8.5. 

If you are not sure whether you should measure the pH of the water you are drinking, it’s good to bear in mind that this can help you determine its corrosiveness, which can ultimately become an issue. 

 

 

Unavailable products

 

Digital pH Meter Vantakool 0.01 pH High Accuracy Pocket Size

 

The VANTAKOOL Digital can be used for both laboratory and household purposes. It is suitable for testing the pH balance of the water in pools, aquariums, spas, Reverse Osmosis (RO) water systems, hydroponics, and in the drinking supply. Versatile enough for a wide variety of applications, this model helps ensure that water quality is of consistent levels regardless of its purpose.

Able to read values and deliver them quickly, this pH meter also offers consistent accuracy. It is equipped with a revolutionary Automatic Temperature Compensation feature.

This component makes it possible for the pH meter to counterbalance automatically any change in temperature when performing readings. This means stability in values.

Another thing to love about this model is how it eliminates the need to use litmus strips and color charts. In the first place, comparing a dipped test strip to a color chart is prone to errors and can often be subjective. Thanks to this pH meter, you have a safe and convenient yet effective way of determining the water quality.

 

Pros

This pH meter offers superior results and great accuracy, which means that no matter where you need to use it, you will be able to ensure that the water quality is consistent. 

Thanks to the Automatic Temperature Condensation, which is a revolutionary technology in this category, the unit delivers fast and stable readings. 

You won’t need to use any color charts or litmus strips if you decide to give this model a go, which means there is little chance of wrong readings on the user’s side. 

The meter can be used to test the pH balance in aquariums, pools, spas, or drinking water, so it’s not a unit that should be missing from any household. 

 

Cons 

The instructions it comes with could be clearer, so if you have any trouble understanding what you should do next, the seller’s customer service can help. 

The display is somewhat difficult to read because there’s no backlight.

 

 

Digital pH Meter with pH Solution Buffer Powder Mini pH Tester

 

The Feramox Digital comes with all you need to get started on the task of monitoring the quality of water sources. It ships with a pH solution buffer powder to facilitate the calibration process. This will ensure that the device is able to read values accurately.

Suitable for testing the water quality in aquariums, hydroponics, swimming pools, and more, this model helps ensure your family’s safety. It can be used in winemaking, brewery, drinking water monitoring, fish tanks and aquariums, pools, and spas.

For the industrial sector, this model also serves for testing raw and finished products in the manufacture of cosmetics and food, as well as in the processing of industrial wastewater, among others. It is also a widely used instrument in the laboratory.

This portable, pocket-sized pH meter also comes with an Automatic Temperature Compensation (ATC) feature, which enables it to offset automatically any temperature variation in the solution being tested.

 

Pros

This unit comes with everything you need to start monitoring the water in your home, including a pH solution buffer powder that ensures an easier calibration process. 

You can use the meter for a wide range of water sources, including aquariums, swimming pools, and hydroponics, this way ensuring your family’s safety and health. 

The unit is accurate enough to be used in the industrial sector as well, so if you need to test food or cosmetics you can safely give it a try. 

Thanks to the Automatic Temperature Compensation feature this unit includes, any temperature variation is offset while testing the water, for more accurate readings. 

 

Cons 

The display is rather small, so it might be a bit difficult to read for some users. 

The unit is very easy to use, but the instructions might not be very clear, so if you have any questions, you can contact the customer representatives.

 

 

Digital pH Meter Pocket Size Tester for Drinking Water

 

If you need a pocket-sized tester to check the quality of water in any residential or commercial setting, the Plantz Shoppe Digital provides the solution.

Its diminutive size enables on-the-go convenient testing of drinking water as well as the water solution in swimming pools, aquariums, spas, Reverse Osmosis (RO) water systems, water tank and reservoirs, and hydroponics systems, just to name a few.

With its broad measuring range of 0 to 14, this model is able to handle more demanding applications. The large, backlit display makes it easy to read measured values in difficult conditions. The provided pH buffer powder enables calibration to keep the meter working as it should. This handheld device beats using test strips and color charts that are quite messy and prone to errors.

The auto calibration button provides a hassle-free way of ensuring the meter provides consistently accurate readings via simple calibration with the three free pH buffer sets.

 

Pros

The unit features an auto-calibration button that ensures each reading is accurate, and it can be used for both commercial and residential settings. 

Thanks to its handy design, you won’t have to deal with unwanted chemicals or pH testing strips as you are trying to determine the water’s quality around your home. 

The backlit display is quite large and easy to read, featuring extra-large numbers, so anyone can use it without any trouble. 

The package includes a carrying case to protect the meter, as well as buffer powders for calibration. 

 

Cons

For optimal results, you should calibrate the unit in distilled water, which means that if you don’t have any at home you are going to need to buy some. 

In rare cases, the unit seemed to have been used before and, even though this might be due to tests performed by the manufacturer, you can still call customer service if necessary. 

 

 

HealthyWiser Digital 

 

Providing a pocket-sized means of testing the quality of water in homes and commercial establishments, the HealthyWiser Digital carries a convenient pen style that enables the user to insert it in the pocket for on-the-scene checking. It offers a wide measuring range of 0 to 14, which enables it to accommodate more demanding testing conditions.

This model provides results instantly without compromising on the much-needed accuracy. It even boasts an Automatic Temperature Compensation (ATC) feature. This functionality serves to ensure that the tool automatically factors in any changes in the temperature of the liquid solution being tested when measuring the pH.

With this implement, the need for messy testing with litmus strips and confusing color charts is eliminated, so there’s less guesswork involved.

As a bonus, buyers of this kit are emailed a PDF of an alkaline food chart and 21 alkaline recipes, which are helpful for those observing a healthy lifestyle. This tool offers a hassle-free way of ensuring health in the home.

 

Pros

This pocket meter works great if you need to check the pH levels in different locations, and it offers a testing range between 0 and 14 for more demanding settings. 

The unit features the Automatic Temperature Compensation technology that allows it to provide reliable readings even during changing water temperatures. 

Given that you won’t need to use any color charts or testing strips, there’s a lower chance of inaccurate readings. 

If you decide to buy this product, you’ll also be emailed a PDF document featuring an alkaline food chart and alkaline recipes, which can help you attain a healthier lifestyle. 

 

Cons

Some users said that the instructions could be clearer, so this is something you should be aware of in case you encounter any difficulties using the meter. 

In rare situations, the device didn’t work properly at first, but the seller can provide the necessary assistance right away.

 

 

Dr. Lyn Digital pH Pen Water Quality Tester Meter

 

Your convenient, portable partner in ensuring the safety of pH levels in liquid solutions, the Dr. Lyn Premium WB-003 is helpful in both commercial and household applications.

The handheld meter ships with four batteries that deliver up to 1,000 hours of continued use. The batteries provide enough life to handle countless testing processes.

A carry case also comes in the kit, which enables you to store the device and prevent damage to it during transport. Free packets of buffer powder are also in the kit to enable the user to do the initial calibration and periodic recalibration. This will ensure that the device delivers accurate results consistently.

The buyer will not have to do troublesome guesswork on how to enjoy optimal use of the device because it ships with instructions in the provided user manual. Re-calibration is not a complicated process at all using the supplied borax and phosphate that serve as standard buffers.

 

Pros

The WB-003 model is very easy to use, as all you need to do is simply push a button, similar to when you are operating a thermometer. 

The total pH scale range goes from 0 to 14, which makes it suitable even for more demanding readings, so you’ll be able to use it in all kinds of settings. 

This unit’s versatility and reliability are what make it an item that should not be missing from your home, especially if you want to ensure a healthier lifestyle for your family. 

The calibration procedure is not that complicated, so you can do it anytime you feel that it’s necessary. 

 

Cons

You should be aware that this is a water tester, so if you’re looking for a soil tester, other models might be better suited. 

The display turns off quite rapidly and this is somewhat of an inconvenience of some users. 

 

 

Dr.Meter 0.01 Resolution High Accuracy Pocket Size pH Meter 

 

This option delivers high accuracy and fast response since it is equipped with a high-quality algorithm chip and electrode, which makes it perfect for solution quality testing. The automatic calibration feature allows you to calibrate the tester with just a press of a button.

The meter can identify the calibration liquid on its own so that you can get the pH reading in a matter of seconds. It is convenient to use since the one-button lock reading function lets you know the liquid quality of any solution, and you can find the measurement and other useful data, such as the temperature, on the easy-to-read LCD screen.

Speaking of temperature, this model has an Automatic Temperature Compensation function that’s designed to solve any possible inaccuracies that could be caused by changes to the temperature of the liquid. The product is very versatile, and it can be used in all types of liquids.

 

Pros

It uses a simple three-point calibration method, and the device can identify the calibration liquid that you’re using to give you an accurate pH reading in a flash.

This inexpensive choice uses high-quality components that help it deliver high accuracy, reliability, and fast response with each use.

The product can handle a wide range of applications; it can be used for testing the pH of drinking water, aquarium, swimming pool, hydroponics, food, beverages, and more.

The unit is supplied with calibration solutions, which will last you for at least two calibrations, and a carrying case to keep the tester safe during transit.

 

Cons

It needs to be calibrated a little more often than other options, though it’s hard to complain considering its price.

It calibrates in a 6.86 solution, not a 7, and if you want to get better accuracy, you will need to order an extra solution for it, which unfortunately is hard to come by.

 

 

Bibliography:

1) What is a pH meter and what is it used for?

2) How does a pH meter work?

3) What is pH meter definition?

4) medicinenet.com