Last updated: August 18, 2021

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Chlorine is a well-known product. In fact, most of us have it at home to disinfect bathrooms and bleach clothes. However, have you ever wondered if you are using the ideal bleach for cleaning your home? Here, we'll give you all the information you need to know before you buy it.

There is another place, besides our homes, where the use of bleach is paramount - that's right, in swimming pools! Especially in public and hotel pools it is necessary to maintain cleanliness, eliminating fungi and bacteria found in the water. So let's start the search for the best chlorine for your pool or home.


  • Chlorine is nothing more than a chemical that has been used for centuries to disinfect surfaces and water. It is very common to find it in homes and in places like hotels or spas that have swimming pools. Regarding the latter, we will see that it is a very concentrated type of chlorine.
  • Despite the great variety you have seen in the market, there are two main types of chlorine: household chlorine and pool or industrial chlorine. Both have extraordinary benefits when used correctly and with the necessary implementation.
  • We will always recommend you to evaluate some factors that will facilitate the selection of the perfect product for you, that meets your expectations and needs. Among these we will evaluate the quantity you could purchase, the scent, the use of accessories and the blends. Let's get started!

The Best Chlorine: Our Picks

Buying guide: what you need to know about chlorine

You probably already know where you would like to use chlorine, but before you make your purchase you need to know a few basics about chlorine. This will help you make the best decision. From how it disinfects, to its pros and cons, to the best places to buy it, we'll answer all your questions!

Chlorine diluted in water is ideal for cleaning surfaces in the home. (Photo: HONGQI ZHANG /

How does chlorine disinfect?

Chlorine is a chemical element used to disinfect. In fact, drinking water depends on chlorination. Over the years it has become a household product par excellence, keeping surfaces free of fungi and bacteria that produce bad odours and viruses.

When it comes to swimming pools, chlorine plays the role of eliminating pathogens, fungi and algae, with the purpose of maintaining perfect hygiene. In this case, the presentations range from liquid to tablets that dissolve in contact with water. Now, its use in these places is delicate, needing a previous study.

  • Affordable price
  • Solid, liquid and powder presentation. Disinfects and purifies
  • Can be combined with some cleaners. Bleaches.
  • Discolours textiles
  • May be toxic
  • May cause allergies. Strong odour
  • Irritating to skin and eyes.

Chlorine for swimming pool or domestic use, what should you pay attention to?

Although there are many types of chlorine, we could separate them into two groups: those used for cleaning surfaces and others used to purify swimming pool water. For example, we could not use soapy chlorine in swimming pool water. Let us look at each of these types.

Swimming pool. Chlorine for swimming pool water works by creating a hypochlorous acid, thus killing all bacteria, fungi and germs that could cause illness to swimmers. If swimming pools, whether salted or chlorinated, were not disinfected, they would be a cesspool of filth and even dangerous.

Domestic. This type of chlorine is sure to be part of your daily life. You will find it in homes, schools, offices, and anywhere that has a good cleaning system. Nowadays, you can get this product mixed with other detergents, scented with everything from flowers of the field to lemon, and in various forms: liquid and gel.

Swimming pool Domestic
Condition Liquid, granules and tablets Liquid and gel
Aroma Intense Flavoured
Components Sodium hypochlorite, calcium hypochlorite, lithium hypochlorite and chlorinated isocyanurates Sodium hypochlorite diluted in water.
Function Clean water from bacteria and fungi Disinfect any surface and bleach clothes.

Which chlorine is ideal for swimming pools?

Keeping pools chlorinated is super important when they are constantly used by many users. If you own a public or private pool, you probably want your swimmers to feel like fish in water, happy and confident that they won't get sick with fungus or ear infections.

Salt water chlorinators and tablets are a favourite

The ideal chlorine for swimming pools comes in tablet, liquid and powder form. Today, tablets and saline water chlorinators, which are much more convenient, are the preferred form of chlorine. You may wonder if the water in your pools will have a strong chlorine smell, and the answer is no. In fact, they only have that unpleasant smell. In fact, they only have that unpleasant smell when they are dirty.

It is important for families to feel safe swimming in clean pools. (Photo: Anna Om /

Could chlorine in swimming pools cause eye discomfort?

We know that for you, whether you're a pool owner or a swimmer, health is paramount. In fact, chlorine can cause mild eye redness, but not because of its concentration in the water. The truth is that the eye and skin irritation is due to chloramines.

When a pool is very crowded with swimmers, it becomes a mixture of free chlorine, sweat, urine and other substances: this is what creates chloramines. As you know, the ailments are not caused by chlorine directly, but because the pool is not well maintained.

Centros para el Control y la Prevención de Enfermedades de Estados UnidosHipertextual
To avoid damage from these chemical compounds, the recommended measures are basic hygiene actions: shower before entering the water, use the public toilets and wear a swimming cap

What type of bleach should I use to remove stains from linen?

This is a question we have all asked ourselves at some point when we see that our white linen has turned yellowish or has some stains on it. What we immediately think of is using bleach to fix it, but any kind of bleach?

In this case you should buy household bleach and make sure that the label says that it is for white clothes. Otherwise, it might not be very kind to your clothes. The ideal is to soak the fabrics in your favourite detergent. However, it is only recommended for cotton or polyester; other fabrics may be ruined by this chemical.

Did you know that there is an instrument for measuring pH and chlorine in water called a chlorimeter or chlorine meter?

Purchasing criteria

Before you make a final decision on which type of chlorine is best for you, we would like to give you some final tips. These are linked to issues about this chemical that might concern you: its aroma, the amount you need to buy according to your needs, the accessories or implements you will need for its use, among others.


Whether you suffer from rhinitis or simply don't like strong smells, the scent factor becomes very important when deciding which bleach is right for you. On the other hand, we wouldn't apply lemon-scented chlorine in spa pools. Let's look at this in detail!

Soapy. Soapy chlorine bleaches produce foam because of their special sodium hypochlorite composition. At the same time, you can find them with scents. The advantage of this one is that you can use it both to remove mould from surfaces, without the need to mix it with soap, and to disinfect your linen.

Bathrooms and floors. In this category you could find from very concentrated bleaches to those that are combined with other disinfectants and soaps. In today's market it is the most used because of its infinite presentations and aromas. We recommend you to always have a bottle of at least 1lt at home. Its chemical smell will be camouflaged among flowers and citrus notes.

Swimming pools and spas. This chlorine should not generate a strong aroma. In fact, when we notice that a pool smells a lot of chlorine it is due to chloramines, which are formed in the water when it is not purified in the right way. So don't worry, any type of pool chlorine will do, without generating odours.


How much chlorine do you need to buy? This depends on your cleaning routine. In the industrial case this should be daily, as floors and pools get dirty all the time, but perhaps at home we only clean one day a week, so between 1 and 3 litres a month would be sufficient.

Domestic. At home we could opt to buy only one litre per month, but this will basically depend on your cleaning routine. It is suggested to buy several types of bleach; for example, a concentrated one for the porcelain in the bathroom, and another soapy one with scent for floors and clothes.

Industrial. When you own a shop, you will want to keep it clean, so we recommend buying a 7lt to 10lt presentation of Cloralex Rendidor. On the other hand, when it comes to swimming pools, the amount is calculated with a chlorimeter: ideally between 1 to 1.5 ppm of chlorine.


Sometimes mixing chlorine with detergents can be wonderful for stronger action. However, there are some chemicals that should not be mixed at all. We want to tell you about these so that you take them into account before investing in chlorine bleach.

Do not mix. It is not advisable to mix bleach with dishwasher, glass cleaner or toilet cleaner; this could cause eye and respiratory problems. Nor should you mix bleach with alcohol, as this will produce chloroform, which can make you dizzy and nauseous.

Mixing for deep cleaning. Now, not all mixtures are bad. In fact, some fortify the cleanse. In this case we have the combination of bleach with detergent powder or other disinfectants for scenting. In fact, it is common to use it that way on floors and for laundry.


As it is a chemical, you should be very careful when handling it, as it may cause skin reactions such as contact dermatitis and irritation. Also, in the case of concentrated chlorine, it is recommended that the rooms are well ventilated. You should never enclose yourself when cleaning with chlorine, as it may be harmful to your health in the long run.

Swimming pool Domestic
Gloves Yes recommended when cleaning surfaces.
Accessories Chlorinator (optional), floating dispenser (tablets), chlorimeter Hand brushes, sponges, cloths
Mouthpieces Only if you are allergic If you are allergic or do not tolerate strong odours.


We feel it is extremely important to highlight the point of the chlorimeter and its types, as it is an instrument you will need if you have a swimming pool. In fact, there is no other more practical way to evaluate the state of the water, its pH and chlorine concentration. Pay close attention!

Swimming pools and thermal baths. A chlorimeter will measure the water's chlorine and pH in seconds, saving you a lot of time and helping you to know how much of this chemical you will need to add each day. One that we recommend is the photometric chlorimeter, as it will work for both pools and hot springs.

Cost. In the market you can look for it as "chlorine meter", and to acquire one you will need to have a budget between 250 MXN and 48,000 MXN. As you can see, it starts from a very affordable price up to others of industrial use. However, it is a technological investment to make if you are buying chlorine for swimming pools.

Buying. Finally, you may wonder where you can buy it. It's very easy, by going to Amazon you will see models of various prices and quality. At the same time, again we suggest you visit a specialised shop such as Hanna Instruments, where you will find chlorimeters that are installed on the pool walls.

(Featured image photo: pixinoo / )