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How to measure pool ph, how often and types of meters

How to measure pool pH, how often, types of meters and why it is important to know how to measure pH as well as control it.

How to measure pool ph
How to measure pool ph

En Ok Pool Reform, in this section within the Swimming pool pH level we will treat the How to measure pool ph, how often and types of meters.

How to measure pH value

how to measure ph
how to measure ph

Why can we measure pH

Why we can measure the pH value

  • On the other hand, clarify that pH (acids and alkaline bases) have a characteristic that allows them to be measured: The concentration of hydrogen ions.

How you can measure the pH value

The measurement of pH of a substance can be made thanks to different methods:

Methods to measure pH:

how to measure ph value
how to measure ph value
  1. First of all, the most common method is a PH meter, which involves a pH-sensitive electrode (usually made of glass) and a reference electrode.
  2. In second position, there are the acid-base indicators change color in response to different pH values. Litmus paper and pH paper are used for quick and relatively inaccurate measurements. These are strips of paper that have been treated with an indicator.
  3. You can use a colorimeter to measure pH of a sample. A vial is filled with a sample and a reagent is added to produce a pH-dependent color change. The color is compared to a chart or standard to determine the pH value.
  4. Likewise, there are metal electrode methods (including hydrogen electrode method, quinhydron electrode method and antimony electrode method)
  5. Glass electrode methods
  6. And finally the semiconductor sensor methods.

Phenolphthalein indicator to measure ph value

phenolphthalein formula

La phenolphthalein, of formula C20H14O4, is a pH indicator that remains colorless in acidic solutions, but in basic solutions it takes on a pink color with a turning point between pH=8,2 (colorless) and pH=10 (magenta or pink).

What is the indicator to measure ph value of phenolphthalein

PHENOLPHTHALEIN is an acid-base indicator widely used in volumetrics. Some generalities of this indicator are explained below.

  • Indicators: Methyl red, Thymol blue
  • Melting point: 531 K (258 °C)
  • Semi-developed formula: C20H14O4
  • Similar structure: Thymolphthalein, Triphenylmethane
How is the phenolphthalein pH indicator prepared?

How is the phenolphthalein pH indicator prepared?

PREPARATION PHENOLPHTHALEIN 1% IN ETHANOL 95º | TEST IN ACID AND BASIC MEDIUM

PHENOLPHTHALEIN: 1 gram of phenolphthalein, in alcohol until completing 100 ml. METHYL RED: 0,1 gram of methyl red must be dissolved in 100 ml of alcohol. If necessary, filter the solution.

How is the phenolphthalein pH indicator prepared?

Phenolphthalein pH value indicator

Test Strip Litmus Paper Phenolphthalein

Phenolphthalein Bottles 

Buy pH meters for laboratories

Digital ph meter for water

pH Meter Electrolyzer Testing Machine

 Litmus paper to measure pH

Price of pH measuring reagent strips

pH meter laboratory

Regulate the pH of the pool

how to analyze the ph of the pool
how to analyze the ph of the pool

How to regulate the pH of a pool?

The first thing you will need to achieve a neutral pH level in the pool water will be a reliable meter that, in addition to allowing you to measure this indicator, gives you the option of knowing the chlorine level. Fortunately, there are various types of kits on the market to carry out this task. Once you have carried out the pH test on the water, you can take the appropriate measures whether the water is acidic or alkaline.

If the pH of the pool is high, that is, it is above 7,6, the pool is considered alkaline. To remedy the problem and return neutrality to the water, it will be necessary to use a pH reducer. Remember that when the pH is too high, chlorine stops having an effect on the water and the appearance of microorganisms and algae is facilitated. For that reason, before adding any type of chemical to the pool, make sure the pH is neutral.

Control measures for correct pH

Tip to maintain ideal pH value

Regularly check the pH of the pool: if possible every 3-4 days.

In the case of a bad storm: check the pH ofl water Just after.

To begin with, to maintain the pH of the pool and ensure that its water is suitable for bathing, it is necessary to measure the pH level of the water..

Once again, we inform you that the ideal pH value of water is: 7,2-7,6.

Consequently, we will have a pH between 7,2 and 7,6, which allows us to avoid adding a greater amount of chemicals to the water.

And, we are going to keep the pool water in perfect condition and with sanitized and pure water to take care of everyone's health.

Acidic or alkaline pool pH values

Here are some relevant measurements to know the acidity or alkalinity of the pool water:

  • In the case of swimming pools, acidic pH values ​​range between 0 and 7,2.
  • Distilled water has a pH = 7, that is, the value that is in the middle or neutral. Although in the case of the pool it would be a low pH.
  • pH value water perfect: 7,2
  • Correct pool pH values: between 7,2-7,6.
  • Finally, in the case of swimming pools, Base pH values ​​range between 7,2-14.

How to measure if the pH is acidic or base

To know if the pH of the pool is acidic or weak bases, we use meters and indicators. whether manual or digital (automated).

Other important parameters related to pool pH

  • Make sure the chlorine level is at the proper levels.
  • A free chlorine value of 0,5 – 2,0 mg/l that prevents the formation of chloroquine and its characteristic odor.
  • Combined chlorine less than 0,6 mg/l that disinfects and prevents burns.
  • And the total chlorine formed by the previous two has a maximum of 2,6 mg/l.
  • Regarding whether you use other ways of disinfecting pool water other than chlorine (bromine, oxygen, etc.), check their values.
  • Total alkalinity: should be set between 125 and 150 ppm.
  • Suitable pool water temperature: between 25 and 30ºC

How to regulate the pH of the pool

the case of pH, The situations you may face are the following:

high pH pool

how to lower the ph of the pool

How to lower high or alkaline pool pH

high ph pool consequences

5 Effective methods to raise the pH of the pool

cloudy pool water
cloudy pool water with high pH pool
  • The pH is above 7.6. Pool water generally tends to raise pH values.
  • With a high pH, ​​the pool water becomes cloudy, chlorine stops having an effect on the water and the appearance of microorganisms and algae is facilitated.
  • For that reason, before adding any type of chemical to the pool, make sure the pH is neutral. Chlorine loses its disinfectant power and forms chloramines with organic matter, causing irritation to the eyes and mucous membranes, as well as the characteristic odor that the water gives off.
  • solution is to use a pH reducerwhich is found in liquid or granulated presentation. Apply milliliters or grams per cubic meter of water as recommended by the manufacturer to lower the pH by 0.1.
  • If the pH of the pool is high, that is, it is above 7,6, the pool is considered alkaline. To remedy the problem and return neutrality to the water, it will be necessary to use a pH reducer.

Low ph pool water.

  • pH is below 7.2. The procedure you must follow is the same as in the previous case, but using a pH riserCuriously, chlorine works 100% with a pH equal to 5, but it would be unviable for the bathroom.
  • If the pH of your pool is acidic, that is, it is less than 7,2, it will be essential to use an increaser. For these cases, experts recommend using caustic soda, a chemical compound known for its alkalinity. The pH of caustic soda It is quite basic and can help regulate the acidity of the water. This is, in fact, one of his most common uses on the market. However, it is important to keep in mind that it is a corrosive product that can never be used above 100 grams per 10m3 of water. Likewise, it must be added completely diluted according to the manufacturer's instructions and always

How to measure pool pH

measure ph pool
measure ph pool
pool ph and chlorine test

Measure pool pH

First of all, emphasize that in the world of the swimming pool we could say that it is an obligation to have a: pH Evaluator (either manual or digital or perhaps automatic).

Types of pool pH meters

Types of pool pH meters: There are manual and automatic pool pH meters.

In both cases, pool water pH meters are very simple and easy to use devices.

Logically, the main difference between one or the other is that automatic ones are more precise but on the other hand they are more expensive.

Manual Pool pH Meters

1st model manual pool pH meters

Analytical strips

Analytical strips for chemical products
Chemical Analytical Strips

What are pH analytical strips?

  • This method is the simplest way To carry out this control, it consists of strips of indicator paper that change color depending on the pH of the water in which they are immersed.
  • Likewise, there are very complete kits that can also test other values ​​such as: total chlorine, residual bromine, total alkalinity, hardness or cyanuric acid.
  • Truly, these types of meters to know pH levels can be found in different formats and designs.
  • Finally, comment that the pH analytical strip system gives a fairly tight range of results.

Characteristics of pH test strips in swimming pools

Analytical strips to control the pH of the pool
Analytical strips to control the pH of the pool

These kits have strips that allow you to evaluate the pH in the water at least weekly.

In this way, you will keep track of the levels presented and have the sequence that the pH presents over time.

It is a way to know if the pH is neutral or presents imbalances above or below between 7.2 and 7.6.

What kits include to measure pool pH

The kits to measure the pH of the pool include: a test tube, two tubes and reagents.

A manual meter will be equally effective in regulating the water. It's about a pH test-kit which includes a test tube, two tubes and reagents. You just have to take a sample of the water and, after following the instructions on the container, check what color the water dyed with the reagent acquires.

How to use pH test strips

On the other hand, comment that the use of pH analytical strips is based on a very easy system.

  1. We simply have to immerse the reaction area of ​​the test strip in the solution to be analyzed for 1-2 seconds.
  2. Then we remove the test strip.
  3. We eliminate the previous excess water.-
  4. Subsequently, we wait 15 seconds.
  5. Then, we compare the color of each panel of the color card on the bottle side and confirm the test result.

Analytical strips to control the pH of the pool price

2nd model of manual pool pH meters

Chlorine-pH analyzer kit

Chlorine and pH analyzer kit

The choice of the Analyzer Kit is more reliable than that of the pH analytical strips.

What are the pH indicators of pool water?

Pool water pH indicators and meters are equipment that contain substances that They change their color when the pH varies (showing by color the degree of acidity or alkalinity of a substance).

How Chlorine-pH analyzer kit works

  1.  First, we will fill both parts of the analyzer kit with pool water.
  2. Next, we will add one Phenol Red tablet and press the cap and shake until the tablet is completely dissolved.
  3. To conclude, we must compare the result of the value of the water that has been colored with the area of ​​the analyzer color.

3st model manual pool pH meters


Pool pH tablet analysis kitPool pH tablet analysis kit

Characteristics Tablet analysis kit for pool pH

  • The pH test kit tablets contain phenol red and DPD 1 chlorine tablets.
  • The pool pH tablet analysis kit method is quick.
  • This methodology is not suitable for photometer.
  • The system is valid for both swimming pools and jacuzzis.

Pool pH tablet analysis kit price

Digital Pool pH Meters

1st digital pool pH meter

Digital water quality meters

Water quality meters
Water quality meters

High precision with the digital pH meter

  • First of all, digital water quality meters allow us to know the quality of the water accurately in just 5 seconds.
  • Normally, these digital equipment are based on a set that analyzes TDS, PH, EC and temperature.
  • These types of measuring devices have an LCD screen that illuminates.
  • Additionally, the digital meter automatically turns off in 5 minutes if not in use to ensure long battery life.

How to use the digital pH meter

  1. Remove the protective cap and clean the electrode every time before use.
  2. Press the ON/OFF button to turn on the device.
  3. Immerse the pH meter into the liquid to be tested (the liquid cannot pass through the dip line, about 4 cm)
  4. Gently remove the device and shake the liquid, wait until the reading is stable.
  5. Clean and dry the tester carefully. Turn off the pH meter.

Digital pH Meter Calibration

  • On the other hand, the digital PH meter has ATC, that is, it can be calibrated automatically (the pack includes a follow-up of powder calibrations). To perform this process, we just need to press the CAL keypad many times to get the exact data when we put it in the water with calibration powder.

digital pool pH meterDigital pool pH measurement system price

2nd digital pool pH meter

pool photometer

Pool photometer

What is the pool photometer

  • The pool photometer is ideal for keeping the water clean since, depending on the model, it can measure the following parameters: bromine, free chlorine, total chlorine, pH, bromine, alkalinity and calcium hardness.  
  • So it allows you to measure the most important parameters of the pool water and obtain the results instantly.

Pool photometer characteristics

  • Modern and ergonomic design
  • Intuitive manipulation
  • Watertight housing*
  • Large screen
  • At the same time, the pool photometer floats and is watertight.

Pool photometer price

3st digital pool pH meter

electronic conductivity analyzer pool water

Electronic pool water conductivity, pH and temperature analyzer

Features electronic analyzer for pool water conductivity, pH and temperature

  • The electronic analyzer offers high precision in pH, EC/TDS and temperature measurements.
  • Likewise, this analyzer is waterproof and floating; They also include a large screen with two reading levels and automatic disconnection in case of inactivity.
  • The pH electrode can be replaced very easily and has a long life thanks to the renewable fiber bond.
  • The graphite CE/TDS probe does not suffer any type of damage caused by salts and other aggressive substances.  

4th digital pool pH meter

Intelligent pool water analyzer

Intelligent pool water analyzer

Features of intelligent pool water analyzer

  • The 24h intelligent pool water analyzer. 
  • In short, it is a floating analyzer with the ability to measure pH, disinfectant level (ORP), conductivity, salinity and temperature.
  • Analyze the quality of the water and indicate, depending on the state of your pool water, the chemicals necessary to maintain it.
  • The equipment connects remotely with a mobile device, to which it reports the different water parameters.
  • Sends data daily through the mobile network.
  • Allows instant measurements via Bluetooth.
  • In conclusion, through the network the user receives all the data about their pool through the application.  

Intelligent pool water analyzer price

Automatic Pool pH Meters

Automatic pool ph regulator

What is the automatic pool pH regulator?

  • Firstly, we would like to emphasize that the automated pool water pH regulator It is a highly recommended piece of equipment to be able to have peace of mind in the maintenance of swimming pools and security for our health.
  • This controller is capable of automatically detecting when the PH of the water needs to be modified and, using a pump, pouring the necessary solution to establish the appropriate value.

5 Unforgivable Mistakes when measuring the pH of your pool

Mistakes when measuring ph pool water

Next, in this video we explain what critical points you should take into account

Therefore, be very careful when you go to measure the pH of your pool, since if you do not do it correctly the value may be far from reality and chemicals may be added based on erroneous information.

https://youtu.be/7H3D2JdygAI
Mistakes when measuring ph pool water

Homemade pH indicator with red cabbage

Swimming pool ph calculator