Liquid chlorine is made by bubbling the gas form of chlorine through caustic soda. It has a high pH level of around 13 and can simply be poured directly into the pool.
Liquid chlorine is used mainly in large commercial or high traffic pools because it can added in bulk with some large commercial pool owners adding it from 55 gallon drums.

Caustic soda pearls (also known as sodium hydroxide, caustic soda, NaOH, sodium hydrate, or Sodagrain) are white spheres of caustic soda with a barely perceptible odour. They are soluble in water, with the liberation of heat, and are stable under normal conditions. Caustic soda is a strong base and, as such, has many applications in industries all over the world, both now and in the past.

Sodium hypochlorite is most often encountered as a pale greenish-yellow dilute solution commonly known as liquid bleach or simply bleach, a household chemical widely used (since the 18th century) as a disinfectant or a bleaching agent. The compound in solution is unstable and easily decomposes, liberating chlorine, which is the active principle of such products. Indeed, sodium hypochlorite is the oldest and still most important chlorine-based bleach.

Calcium hypochlorite is commonly used to sanitize public swimming pools and disinfect drinking water. As a swimming pool chemical, it is blended with other chemicals less on than other forms of chlorine, due to dangerous reactions with some common pool chemicals. In solution, calcium hypochlorite could be used as a general purpose sanitizer,[3] but due to calcium residue, sodium hypochlorite (bleach) is usually preferred.

In the cosmetics industry it is used on the skin. It is also used in baby products. Similarly, in ships and yachts, marine sanitation devices use electricity to convert seawater into hypochlorous acid to disinfect macerated faecal waste before discharge into the sea.

NaCl, the main ingredient in table salt, is an ionic compound.Pure sodium chloride crystal is colorless transparent cubic crystal, due to the presence of impurities, sodium chloride is generally white cubic crystal or fine crystal powder, soluble in water, salty;Low thermal conductivity;Non-conductive;Hygroscopic, easy to moisture.

Hydrated lime (or calcium hydroxide, or slaked lime) is usually a dry powder resulting from the controlled slaking of quicklime with water. The exothermic or released heat of reaction is captured and used to evaporate the excess slaking water. Hydrated Lime is used in many industries including the oil and gas industry. The chemical property of this solution has a neutralizing effect and it is used as an additive in the drilling fluids used in the petroleum refining industry.

It is sometimes used in the human food industry as a firming agent for food starch, where it takes on E number E520, and in animal feed as a bactericide. Aluminum sulfate may be used as a deodorant, an astringent, or as a stiptic for superficial shaving wounds. Aluminium sulfate is used in water purification and as a mordant in dyeing and printing textiles.

Cyanuric acid is used as a chlorine stabilizer in swimming pools. It binds to free chlorine and releases it slowly, extending the time needed to deplete each dose of sanitizer. CYA provides is a huge benefit to chlorine. CYA can extend the life of free chlorine by as much as 8 times in direct sunlight. For outdoor pools, that’s a game changer. That said, CYA is not to be used in an indoor pool.

Sodium bicarbonate, commonly known as baking soda, is a chemical compound with the formula NaHCO₃. It is a salt composed of a sodium cation and a bicarbonate anion. Sodium bicarbonate is a white solid that is crystalline, but often appears as a fine powder.

Sodium carbonate is a food additive (E500) used as an acidity regulator, anticaking agent, raising agent, and stabilizer. In cooking, it is sometimes used in place of sodium hydroxide for lyeing, especially with German pretzels and lye rolls. These dishes are treated with a solution of an alkaline substance to change the pH of the surface of the food and improve browning.

Sodium sulfate is the inorganic compound with formula Na₂SO₄ as well as several related hydrates. All forms are white solids that are highly soluble in water. With an annual production of 6 million tonnes, the decahydrate is a major commodity chemical product.

Copper sulfate is produced industrially by treating copper metal with hot concentrated sulfuric acid or its oxides with dilute sulfuric acid. For laboratory use, copper sulfate is usually purchased. Copper sulfate can also be produced by slowly leaching low grade copper ore in air; bacteria may be used to hasten the process. Commercial copper sulfate is usually about 98% pure copper sulfate, and may contain traces of water.

PAC is an inorganic chemical having polymeric structure soluble in water. Polyaluminium chloride (PAC) is manufactured in both liquid and powder form. The product is used in deodorants and antiperspirants, as a flocculant in water purification, in treatment of drinking / potable water, wastewater treatment and paper sizing.