PH Meter

PH Meter

PH Meter for Pool, Spa, Aquarium, Brewing...

What is a pH meter?

A pH meter is a sensitive measuring instrument that measures the pH value of a specific substance. You can measure the pH level of almost all liquids and organic substances. This means the applications for using a pH meter are almost endless. pH is a measuring scale to measure the acidity or the basicity of a solution. There are 2 popular ways to measure pH. PH testing strips are specially designed strips with a special absorbing cushion on it. This will interact with the pH level of the testing liquid and will change color according to the pH level measured. These pH testing strips tend to be less accurate than the more modern, digital pH meter. A digital pH meter has a sensitive glass pH electrode which is filled with a special solution. This glass pH electrode is very sensitive and porous, so that it can interact with the substance it is in. The difference in Hydrogen atoms between the liquid inside the glass electrode and the testing liquid is measured by 2 electrodes inside the pH meter. The pH meter will analyze this data and give you a precise result on the LCD screen.

The standard pH scale goes from 0 to 14. A pH level of 7 is considered to be a neutral solution. Anything with a pH level between 0 and 7 is considered to be acidic. The more a pH level drops down to 0, the stronger the Acidity. A pH level between 7 and 14 is considered to be a base. The higher a pH level, the stronger the basicity. All normal pH available for consumers measure pH on a scale from 0 to 14. But in a professional lab, measurements below pH0.00 and above pH14.00 are possible. No need to say that this would require specially designed and very expensive laboratory equipment for professional use.

Why do you use a pH meter?

Most people know a pH meter is associated with pools. But accurately measuring pH is a very important step and part of a very large variety of applications. The most frequent applications are water-treatment, aquariums, hydroponics, laboratories, brewing, food industry, cultivation of plants… Measuring pH is usually the first and most important step in any analysis. Lets give a few examples:

PH Meter for pool and spa

If you have a beautiful pool, you need to make sure your water is in top condition all the time. You usually want a pH level between pH7.2 and pH7.5. The reason is twofold. First you want your pool water to be as neutral as possible. Water with a neutral pH level is less damaging for the skin and the eyes of the people using your pool. The second reason is that Chlorine works at its best between these pH levels. If you neglect the water quality of your pool for too long, your pH level could reach extreme levels which could be harmful for the bathers, the liner of your pool and the technical equipment. So check the pH level of your pool regularly. Even if you have an automatic dosing system for your pool, you must measure manually. There can always be problem with the electrodes of your dosing system. Don’t take any risks and check the pH level of your pool on a regular basis.

The same rule applies to your precious Jacuzzi. Since the water of your spa or jacuzzi are kept at a much higher temperature you will need to monitor the pH level and chlorine levels of your water at least once a week. With your new digital pH meter you can do this job in seconds.

PH meter aquarium

You just invested in a beautiful aquarium. You have filled it and now you are ready to add your magnificent exotic fish to your precious aquarium. Wait! Are you sure the pH level of your tank is perfect for your fish? Just like humans, fish also prefer a specific pH level in order to feel good and comfortable. That is why measuring the pH level of your aquarium on a regular basis is absolutely vital for the wellbeing of your fish. With our pH meter or pH monitor for aquariums you have the perfect tool in hand.

PH meter for brewing, garden, food…

There are so many more applications for a pH meter that it would be difficult to go over all the options. Lately we are seeing a whole new group of customers, microbreweries. Checking the pH level during various stages of brewing allows you better control your brewing process. Business who cultivate plants, use our pH meters to check the pH level of the water used to feed the plants, and of the fertilizer. Optimizing the pH level of your water and fertilizer improves the growth of the fruit, vegetables or other crops that are cultivated.

How to use a pH meter?

A pH meter is a very simple tool to operate. But keep in mind that is has a sensitive glass electrode. Be gentle, never touch the pH electrode with your fingers and try not to bump into anything.

  1. Prepare a clean glass and fill it with a liquid you want to measure the pH level of. Try not to use your pH meter directly into a large volume of liquid, always measure in a separate glass or cup. You want to fill the cup just deep enough that the pH electrode is fully submerged.
  2. Turn on your pH meter and place it in the liquid.
  3. Stir gently and wait for 1 minute until the measurement is stable.
  4. Now you can read the pH level on the screen of your pH meter.

How to calibrate a pH meter?

A pH meter works like a battery, eventually the active liquid inside the pH electrode will gradually lose its potential. This means that over time your pH meter needs to be calibrated, to correct for the gradual loss of sensitivity. To calibrate your pH meter, you will need a calibration solution designed for pH meters. This calibration solution has a fixed pH level. Because the pH level of this calibration solution is known, you can use it to re-calibrate your pH meter so that it measures accurately again. There is a large variety of pH buffer powders and calibration solutions available. Make sure that you calibrate your pH meter with the correct pH buffer.

If your pH meter has manual calibration, we recommend to use a pH buffer that is as close to the pH level you usually measure. If your pH meter has automatic calibration, the manufacturer will give you the exact specification of the pH buffer you need. For automatic calibration the 2 calibration points are usually pH6.86 and pH4.00. We recommend to calibrate your pH meter every 2 weeks when used regularly. If you want the most accurate results, it is advised to calibrate your pH meter before each use. Please always carefully read the instructions of your pH meter

Manual pH meter calibration

  1. Prepare the correct pH calibration solution for your pH meter. Prepare 2 clean glasses and fill them with the calibration solution, just deep enough that the pH electrode is fully submerged. We want to use 2 glasses because we don’t want to contaminate the measurement in the first glass.
  2. Take your pH meter and place it in the first glass. Stir gently and wait 1 minute for the measurement to stabilize.
  3. Now place your pH meter in the second glass. Stir gently and wait 1 minute until the pH measurement is stable.
  4. Now take the mini-screwdriver and turn the little screw on your pH meter up or down, until the measurement on your screen is exactly the same as the pH level of your pH buffer solution.
  5. Your pH meter is now calibrated and ready to use.

Automatic pH meter calibration

  1. Prepare the correct pH calibration solution for your pH meter. Prepare 2 clean glasses and fill them with the calibration solution, just deep enough that the pH electrode is fully submerged. We want to use 2 glasses because we don’t want to contaminate the measurement in the first glass. ( if you need 2 calibration solutions, you will need 4 cups)
  2. Take your pH meter and place it in the first glass. Stir gently and wait 1 minute for the measurement to stabilize.
  3. Now place your pH meter in the second glass. Stir gently and wait 1 minute until the pH measurement is stable.
  4. Press and hold the calibration button for 5 seconds. The pH meter will automatically recognize the pH buffer and perform the calibration.
  5. Clean your pH electrode in neutral or distilled water.
  6. Repeat step 2-4
  7. Your pH meter is now calibrated and ready to use.

We offer a wide variety of calibration solutions for pH meters. There are 2 types, you have PH buffer powder and Pre-mixes pH storage solution. The pH buffer powder needs to be dissolved into 250ml of distilled water. Make sure that the powder is completely dissolved. The benefit of the pH powder is that you can store it longer, and it comes in many different pH levels. The calibration solution is already pre-mixed and ready to use for the calibration of your pH meter. The steps to calibrate your pH meter are valid for most pH meters. We advise you to always read the instructions or your pH meter to make sure select the correct pH buffer and follow the precise calibration procedure.

How to store a pH meter?

As we written before, a pH meter has a very sensitive electrode. You want to protect your pH electrode from drying out as much as possible. Always put the protective cap back on your pH meter after use. We advise you to also use KCL storage solution. This is a special solution designed to protect your pH electrode from drying out. This KCL storage solution is identical to the liquid inside a pH electrode. By adding a few drops to the protective cap or your pH meter, you provide extra protection. This will significantly prolong the lifespan of your pH meter or pH electrode.

Clean your meter after every use with clean water. If the electrode of your pH meter has been into contact with greasy substances, you can try to clean it with a little cleaning alcohol. After the cleaning, add the KCL storage solution and put your pH meter in a dark and dry place.

How do we select our pH meters?

Over the years we have become specialist in our field. Our goal is to supply high quality pH meters for a wide variety of applications and budget. Our digital pH meters have all been selected because they are easy to use, easy to calibrate and measure accurately. And on top of that, we do our best to give you the lowest prices possible and best service. Below we give you a brief overview of all the pH meters we currently have on stock. Check out the product pages for more technical details, pictures and instructions.

  • Our PH-EZ is a perfect pH meter for clients who need to measure the pH level of their pool, spa, aquarium.... Extremely easy to use and very precise. The perfect pH meter for people who need to measure pH on a regular basis, but not intensively. You simply turn this meter on, place it in the liquid you want to analyze and read the pH on the LCD screen.
  • The PH-EZ2 improves on the PH-EZ by adding temperature measurement and automatic calibration.
  • Our PH-PRO 2in1 PH meter is designed for intensive users. It comes with a very robust and shock-proof casing, large LCD display, replaceable pH electrode, automatic calibration, temperature measurement… This is a full option model, at a very attractive price. And because you can replace the pH electrode, you can easily renew it without having to buy a complete new pH meter.
  • If you want to measure PH and EC at the same time, our PH EC Combo meter is what you need. Accurately measure pH and EC with the same meter saves time and money. The meter has the same robust and shockproof casing of the PH-PRO pH meter. You can calibrate the pH and EC easily and the electrode is replaceable.
  • The pH meter for aquariums is the perfect pH monitoring tool for your precious aquarium. It comes with everything you need to attach it to your aquarium, works on both batteries and dc adaptor (included) and a pH electrode with a BNC connection.