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Water Testing

Water testing might not be the most fun aspect of owning a pool, but it's vital to keep your water healthy and your pool clean. UK Pool Store stock everything you'll need to keep your pool and water in tiptop condition. If you're unsure what to do, we have some guides below, or, give us a call, free of charge, on 0800 917 2229.

eXact iDip Smart Photometer

The new eXact iDip provides complete connectivity between the iPhone, iPad, and iPod Touch and this amazing photometer.

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Lovibond Chlorine & pH Test Kit

Lovibond Chlorine & pH Test Kit is an ideal solution for basic testing of swimming pool water. Comes with full instructions. ...

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Blue Horizon Test Tablet Saver Pack

Blue Horizon Test Tablet Saver Pack is an ideal way to buy your seasons test tablets. Blue Horizon Pool Testing Saver ...

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Blue Horizons Test Strips

Blue Horizons Test Strips are ideal for accurate & rapid testing results. There are 4 different types of test strips available.

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AquaChek Chlorine / pH / TA Test Strips

AquaChek Chlorine Test Strips Tests for Free Chlorine, Cyanuric Acid, pH and Total Alkalinity 50 strips per bottle.

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AquaChek Bromine / pH / TA / TH Test Strips

AquaChek Bromine Test Strips Tests for Total Bromine, pH, Total Alkalinity and Total Hardness - 50 strips per bottle. Just dip ...

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AquaChek Select Test Kit

AquaChek Select Test Kit - Tests for Free Chlorine, Cyanuric Acid, pH, Total Hardness,Total Chlorine,Total Bromine and Total Alkalinity 50 strips ...

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AquaChek Monopersulfate / pH / TA Test Strips

AquaChek Monopersulfate / pH / TA 50 strips per bottle. These Non-Chlorine shock test strips offer fast reliable results in 15 ...

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AquaChek Salt Test Strips

AquaChek White is a unique test strip that simplifies an otherwise complicated testing operation. Unlike other test kits, the AquaChek White ...

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Guardex Test Kit

Guardex Water Test Kit - The extremely accurate liquid reagent system from Guardex. The Guardex Water Testing Kit, tests your pool ...

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Aquacheck TruTest

The AquaChek TruTest Digital Test Strip Reader is intended to provide a convenient alternative to visual color matching, with the ease ...

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Lovibond Scuba II Digital Pool Tester

The Lovibond digital scuba II tester is an immersible tester which uses the same technology as is used in public swimming ...

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Lovibond Bromine & pH Test Kit

Lovibond Bromine & pH Test Kit Test Kit is an ideal solution for basic testing of swimming pool water, comes with ...

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Lovibond PC 3 in 1 Photometer

Lovibond PC 3 in 1 Photometer - Test for Chlorine / Bromine, pH and Cyanuric Acid. Photometers give you the most ...

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Chlorine Testing DPD Test Tablets

DPD Test Tablets - DPD1 test tablet is for testing free chlorine - that is chlorine which is ready to fight ...

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pH Testing Phenol Red Test Tablets

pH Testing Phenol Red Test Tablets - Phenol Red test tablet are used for testing the pH of your water. Having ...

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Lovibond DPD No.4 x 250 Tablets - Foil Strips

Lovibond DPD No.4 x 250 Tablets - Foil Strips - Photometer or Comparitor standard tablets and Rapid tablets for Checkit Test ...

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Lovibond Cyanuric Test Tablets x 250 Blister Pack Tablets

Lovibond Cyanuric Test Tablets x 250 Blister Pack Tablets - Photometer or Comparitor tablets - Tests water for Cyanuric Acid levels.

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Lovibond Copper Test Tablets - Available in No.1 & No.2

Lovibond Copper Test Tablets - Available in No.1 & No.2 - Photometer or Comparitor tablets - Tests water for Copper levels.

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Lovibond Calcium Hardness & Total Alkalinity Tablets

Lovibond Calcium Hardness & Total Alkalinity Tablets

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Palintest Alkavis Test Tablets

Palintest Alkavis 250 Blister Packed Test Tablets - Total Alkalinity test tablets for Comparitors.

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Palintest Bottle Test Tablets

Palintest Test Tablets in a 250 tablet bottle. Total Alkalinity in a range of 0 - 500mg/l & Calcium Hardness ...

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Pool Chlorine - Frequently Asked Questions (FAQ)


Which pool chlorine should I use to keep my water in perfect condition?

The type of chlorine you select depends upon your application, your preferences and your pool maintenance habits. The most common (and therefore the least expensive) form of chlorine is a 3-inch tablet. 3-inch tablets are slow dissolving, which requires less maintenance. You can fill a floating chlorine feeder or automatic chlorine feeder with large amounts of slow dissolving 3-inch chlorine tablets, and if the feeder is adjusted properly, you may not have to worry about your chlorine level for a week or more. Water testing should always be performed at least twice per week to ensure proper water balance. Professional testing should be done 3 to 5 times each season; professional testing will and should perform further tests usually not available to consumers: total chlorine versus free chlorine, cyanuric acid, acid demand, alkali demand, adjusted total alkalinity, calcium hardness, water temperature (makes a difference in overall water balance), total dissolved solids (TDS), iron, copper, QAC (quaternary ammonium compounds) or algaecide level.

What are Swimming Pool Chlorine Sticks?

Chlorine sticks are larger and dissolve even slower than 3-inch chlorine tablets, but are not as popular. 1-inch chlorine tablets dissolve more quickly than 3-inch chlorine tablets or chlorine sticks, and are better suited to above ground swimming pools, smaller in ground swimming pools or spas. Granular chlorine works just as well as the tablets and sticks mentioned above, however granular chlorine (inorganic chlorine such as calcium hypochlorite) must be pre-dissolved in a bucket of water before adding to a swimming pool. Granular chlorine must be pre-dissolved and added to the swimming pool water almost every day. Other types of organic chlorine (Sodium Dichloride) or inorganic Lithium Hypochlorite do not need pre-dissolving. This allows very precise control over the chlorine level of the swimming pool, but requires daily testing and addition of the chemical.

What is the difference between chlorine and bromine?

The difference between chlorine and bromine is that once chlorine combines with bacteria or harmful organics to kill them, most of the chlorine is used up and will no longer work to sanitize your swimming pool. This combined chlorine will be burned off by the next shock treatment and removed from the pool water by the filter. When bromine combines with bacteria in pool water, the bromine is still active but combines with the bacteria and organic matter to neutralize these harmful contaminants. When you shock a bromine pool the shock treatment only burns off the harmful contaminants, and leaves a good portion of the bromine behind in the pool water. The bromine left behind is available to sanitize the pool again. The result is that the volume of bromine tablets needed to sanitize a swimming pool is noticeably less than the volume of chlorine needed to do the same job.

What problem does the accumulation of chlorine and chloramines cause?

If chloramines or combined chlorine is allowed to accumulate, they will become more difficult to break-up or control leading to "smelly" water, cloudy water, irritated eyes & skin, early algae growth, etc. and becomes a chlorine demand. When a chlorine demand is present, it will be difficult to maintain a secure chlorine level and requires a HUGE amount of chlorine to satisfy the demand (amounts of 50 or more pounds in 20,000 gallons of pool water is not uncommon). If the chlorine demand is NOT satisfied, the problem will only worsen as more chlorine is combined to form more and more chloramines.

When should I "shock" my pool?

Shock the pool weekly to prevent and eliminate chloramines. Follow up the next morning with a maintenance dose of a good quality algaecide to prevent algae growth (algaecides are surfactants so they work on pool surfaces where algae tends to grow).

For further information regarding swimming pool water testing and water testing equipment please contact our customer services team. All calls are free of charge!

0800 917 2229

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