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  1. Home
  2. quality pool water

Quality of pool water

To keep the water in your swimming pool clear and healthy, you need to test the water quality on a regular basis. The chlorine and pH values play an important part in this regard. However, the alkalinity and cyanuric acid content are also important parameters. In this category, you can find all the swimming pool testers to help you check the water in your swimming pool.

Price
Oto & pH 3-way test kit
Willy's Choice
Oto & pH 3-way test kit

Oto & pH 3-way test kit

12,50 €
  • Test kit with vials
  • For measuring chlorine and pH levels
Test kit for water quality
Ondilo ICO Digital pool water tester
Willy's Choice
Ondilo ICO Digital pool water tester

Ondilo ICO Digital pool water tester

399,00 €
  • Digital water analyser
  • For swimming pools
  • With application via smartphone
  • No interference with the shutter
  • Smart analysis tool
  • Easy to use and maintain
Smart digital meter for your pool
Hanna Pocket pH, salt and temperature meter - with replaceable probe
Hanna Pocket pH, salt and temperature meter - with replaceable probe

Hanna Pocket pH, salt and temperature meter - with replaceable probe

228,69 €
  • Pocket meter from the Hanna brand
  • Measures pH, salt and temperature
  • For high-precision results
  • With replaceable probe
  • Easy to use
Hanna pocket meter for pH, salt and temperature
Pool test strips 3 in 1
Pool test strips 3 in 1

Pool test strips 3 in 1

12,00 €
  • Test free chlorine, pH and alkalinity
  • Test the three most important pool water parameters
  • 50 strips per pack
  • Suitable for both pool and spa
Test strips for pool and spa
Test strips 6 in 1 Lamotte
Test strips 6 in 1 Lamotte

Test strips 6 in 1 Lamotte

18,95 €
  • Test 6 parameters with 1 test strip
  • 50 strips per pack
Test strips 6 in 1 for testing pH, free chlorine, total chlorine, cyanic acid, alkalinity, total hardness
DPD and pH analysis kit Lovibond
DPD and pH analysis kit Lovibond

DPD and pH analysis kit Lovibond

19,95 €
  • Manual testing of chlorine and pH
  • Including chlorine and pH tablets
  • Accurate measurements with colour codes
DPD test set
Aquachek Salt test strips
Aquachek Salt test strips

Aquachek Salt test strips

14,00 €
  • 10 test strips
  • Measure the correct salinity
  • Specially for salt electrolysis systems
Aquachek Salt test strips
Blue Check Pool&Spa 5-in-1 test strips
Top seller
Blue Check Pool&Spa 5-in-1 teststrips

Blue Check Pool&Spa 5-in-1 test strips

12,95 €
  • For measuring pH, chlorine, bromine, alkalinity, hardness, cyanuric acid
  • Free app
  • 50 test strips
  • Read off after 10 seconds
Blue Check 5-in-1 test strips
Climazur test strips (50 pieces)
Top seller
Test strips for water quality

Climazur test strips (50 pieces)

12,00 €
  • Test strips to measure water quality
  • Analyses free chlorine, pH and total alkalinity
  • 50 pieces per package
  • Result in 30 seconds
Test strips to measure chlorine-, pH-value and total alcalinity
AquaChek Yellow 4-in-1 test strips
test strips Aquachek 4-in-1

AquaChek Yellow 4-in-1 test strips

14,00 €
  • 50 test strips Aquachek
  • Measure chlorine, pH, alkalinity and cyanuric acid
  • The world's most commonly used test strips
  • Fast, easy and accurate
Test strips Aquachek 4-in-1
Digital salinity meter (incl 1 calibration charge)
Digitale zoutgehalte meter (incl 1 calibratie  opl)

Digital salinity meter (incl 1 calibration charge)

34,35 €
  • Digital tester
  • For salt
  • From the Kokido brand
Digital tester for salt
Digital pH meter (incl 2 calibration charges)
Digitale pH meter (incl 2 calibratie  opl)

Digital pH meter (incl 2 calibration charges)

34,35 €
  • Digitale tester
  • For pH
  • From the brand Kokido
Digital tester for pH
Hanna pocket photometer for iron
Hanna pocket fotometer voor ijzer

Hanna pocket photometer for iron

75,00 €
  • Water-resistant meter for iron
  • Pocket-sized
  • For high-precision measurements
  • Easy to use
  • Calibration fluid included
Digital tester
Scuba III Lovibond Electronic tester
Scuba III Lovibond Electronic tester

Scuba III Lovibond Electronic tester

220,00 €
  • Electronic tester
  • From the Lovibond brand
  • More precise results than the AquaChek TruTest
  • Measures chlorine, pH, alkalinity and stabilisation
  • With application
Electronic tester
Hanna digital photometer 4 in 1 complete kit
Hanna digital photometer 4 in 1 complete kit

Hanna digital photometer 4 in 1 complete kit

598,95 €
  • Photometer for free/total chlorine, pH and alkalinity
  • Complete kit
  • In handy carrying case
Photometer for free/total chlorine, pH and alcalinity
Hanna Pocket Basic Salt Meter
Hanna Pocket Basic Salt Meter

Hanna Pocket Basic Salt Meter

85,91 €
  • Water-resistant meter for salt
  • Pocket-sized
  • For high-precision measurements
  • Easy to use
Hanna pocket salt meter
Hanna pH pocket meter
Hanna pH pocket meter

Hanna pH pocket meter

78,05 €
  • Water-resistant meter for pH
  • Pocket-sized
  • For high-precision measurements
  • Easy to use
  • Calibration fluid included
Pocket pH meter
Hanna Pocket pH, ORP and temperature meter - with replaceable probe
Hanna Pocket pH, ORP and temperature meter - with replaceable probe

Hanna Pocket pH, ORP and temperature meter - with replaceable probe

296,45 €
  • Pocket meter from the Hanna brand
  • Measure pH, ORP and temperature
  • For high-precision results
  • With replaceable probe
  • Easy to use
Pocket meter for pH, ORP and temperature
Hanna Pocket pH and temperature meter - with replaceable probe
Hanna Pocket pH and temperature meter - with replaceable probe

Hanna Pocket pH and temperature meter - with replaceable probe

157,30 €
  • Pocket meter from the Hanna brand
  • Measure pH
  • For high-precision results
  • With replaceable probe
  • Easy to use
Pocket meter for pH
Ondilo ICO Digital Spa Water Tester
Ondilo ICO Digital Spa Water Tester

Ondilo ICO Digital Spa Water Tester

399,00 €
  • Digital meter
  • For spa & jacuzzi
  • With application via smartphone
  • Smart analysis tool
  • Easy to use and maintain
Digital meter for spa & jacuzzi
Digital water tester Chlorine Hanna
Digital water tester Chlorine Hanna

Digital water tester Chlorine Hanna

75,00 €
  • Digital water tester Chlorine Hanna
  • Easier and more accurate than chemical test kits
  • Practical pocket size
  • Easy-to-read display
  • Simple single-button operation
  • Suitable for pools, hot tubs & spas
Electronic Chlorine checker
Digital water tester Alkalinity Hanna
Digital water tester Alkalinity Hanna

Digital water tester Alkalinity Hanna

75,00 €
  • Digital water tester Alkalinity Hanna
  • Easier and more accurate than chemical test kits
  • Practical pocket size
  • Easy-to-read display
  • Simple single-button operation
  • Suitable for pools, hot tubs & spas
Electronic alkalinity checker
Digital water tester pH Hanna
Digital water tester pH Hanna

Digital water tester pH Hanna

85,91 €
  • Digital water tester pH Hanna
  • Easier and more accurate than chemical test kits
  • Practical pocket size
  • Easy-to-read display
  • Simple one-button operation
  • Suitable for swimming pools, hot tubs & spas
Digital water tester pH Hanna
Pool Lab 1.0 Electronic tester
Pool Lab 1.0 Electronic tester

Pool Lab 1.0 Electronic tester

129,00 €
  • Electronic tester for water quality
  • Measure Alkalinity, Bromine, Chlorine (total), Chlorine (free), Bound Chlorine, Hardness, pH, Stabilisation
  • Contains test tablets en 2 AAA batteries
  • Free access to the PoolLab application
Pool Lab 1.0 Electronic tester
Blue Connect Plus Battery
Blue Connect Plus Battery

Blue Connect Plus Battery

24,95 €
  • Lithium battery
  • Easy to replace
Blue Connect Plus Battery
Blue Extender
Blue Extender

Blue Extender

67,50 €
  • Connects your Blue Connect Plus to your WiFi network
  • Keeps your Blue Connect Plus online
Keeps your Blue Connect Plus online at all times
Blue Connect Plus - Salt
Blue by Riiot intelligent water tester

Blue Connect Plus - Salt

429,00 €
  • Intelligent analysis device
  • Gives step-by-step plan to improve the quality
  • Measures pH, chlorine, temperature and conductivity
  • Also for salt electrolysis
The ultimate intelligent analysis device
AquaChek TruTest digital water tester
Digital tester water quality

AquaChek TruTest digital water tester

89,95 €
  • Digital tester to check the water quality
  • To analyse Chlorine, pH and Alkalinity
  • 25 test strips included
  • Power source: 2 x AA penlite battery (not included)
Digital tester for chlorine, pH and alkalinity
Email me when product is in stock
AquaChek Red 4-in-1 test strips
AquaChek Red 4-in-1 test strips

AquaChek Red 4-in-1 test strips

14,94 €
  • Test strips used to measure the pH value, bromine content, alkalinity and total hardness
  • 50 strips per package
Test strips used to measure the pH value, bromine content, alkalinity and total hardness
Email me when product is in stock
Water-resistant 4-in-1 digital photometer Pool Line
Water-resistant 4-in-1 digital photometer Pool Line

Water-resistant 4-in-1 digital photometer Pool Line

441,65 €
  • Waterproof photometer
  • Measures alkalinity, chlorine, cyanic acid and pH
  • High accuracy
  • From the Hanna Instruments brand
4 in 1 electronic photometer
Email me when product is in stock
Scuba II Lovibond Electronic tester
Top seller
Scuba II Lovibond Electronic tester

Scuba II Lovibond Electronic tester

115,00 €
  • Electronic tester for water quality
  • Measures chlorine, pH value, alkalinity and cyanuric acid
  • Contains test tablets en 2 AAA batteries
  • Best price / quality
Electronic tester for water quality
Email me when product is in stock
Why test the pool water?

Why test the pool water?

Testing the water quality is important for maintaining a healthy swimming environment. If there is an imbalance in the quality of the water, the bacteria will not be killed. This can lead to you contracting certain symptoms associated with swimming, such as intestinal problems.

In addition, poor water quality can also cause damage to the swimming pool and the filter installation. Excessive acidity or too much chlorine can affect the components and pipes, with the result that they may have to be replaced.

How do you test the swimming pool water?

There are different methods for testing the swimming pool water. On the one hand, there are the manual pool testers. On the other hand, there are also digital alternatives available.

If you want to test the water in your swimming pool by hand, you can use pool test strips or a pool water test set.

With the test strips, you simply dip the test strip briefly in the water and then read off the water quality against the colour code on the packaging. Most test strips measure 3 or 4 values.

If you use a pool water test set, then you can only test the chlorine and pH values. Take a little bit of water from the pool, add 5 drops of the test liquid and compare the colours in the test set with the packaging.

Among the digital variations, we recommend the Scuba II from Lovibond. With this, you test the pool water quality using test tablets. Take a test tablet, put it in the digital tester and dissolve the test tablet. After a few seconds, you can perform the test and read off the value of a particular parameter. With the Scuba II from Lovibond, you can test 4 different values with the test tablets.

You can find more information about the manual testers or digital testers on the relevant product pages. On each page, we explain how you can check the water quality with that particular swimming pool tester.

What pool tester should you buy?

If you’ve decided to buy a swimming pool tester, you can do this in our webshop. However, you can also buy a pool tester from one of our physical outlets.

At Willy Naessens Swimming Pools, you don’t just get your pool tester for the right price. You can also get answers to all your questions there. We are happy to explain how your pool tester works and what to look out for.

What pool tester should you buy?
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