Think of purity,
think of "PURE"

Water is considered an important factor in the lives of humans; therefore, we should choose to drink clean and safe water. Water purifiers are produced as device to help remove contaminants from drinking water and the installation of a water purifier for home use is the best and easiest way to filter and clean water. Therefore, choosing a water purifier for home use is important. However, the selected water purifier should be certified and meet internationally recognized standards. Before deciding to buy a water purifier, we should first know the water purifier standard and its evaluation criteria. NSF International follows American National Standards Institute (ANSI) to sets NSF/ANSI standards for properly evaluating efficiency of water purifiers; and they have been accepted in many countries. NSF International analyzes the following factors for certifying water purifiers as follows: Physical Effects: Test the efficiency of water purifiers in reducing the amount of contaminants that affect taste, odor and clarity of drinking water, Health Effects: Test the efficiency of water purifiers in reducing the environmental contaminants including lead, asbestos, volatile organic compounds and pesticides in drinking water, Ultraviolet light treatment on microbiological safety: Test on a water purifier that uses ultraviolet light to eliminate microorganisms in drinking water.

Before choosing the best water purifier, you must know the nature of the water that will pass through the purifier, such as groundwater or tap water, in order to select the right filter for the water. In addition, you must know the number of members in the house in order to select a water purifier with enough water production capacity per day. Water purifier for household purposes can be roughly divided into 2 types: water purifier suited for water for use and water purifier suited for drinking water. • The water purifier suited for water for use is intended for filtering tap water or groundwater before entering residential water supply piping system. It removes minerals and impurities that may enter the system and cause clogging in the pipes or cause the pipes to rust. It is often used in combination with water pump and water supply tank. • The water purifier suited for drinking water is a higher quality water purifier with a multi layer filtration system. It removes particles and impurities. Some of its models have antimicrobial properties. It is designed to be connected to water tap fittings for filtering household drinking water.

Nowadays, most houses have water tanks to store water for use all the time, but these large tanks often are not cleaned; contaminants get into the water and accumulate inside the tanks. After a long time, these contaminants enter a house and cause a blockage in faucets and electrical appliances and accumulation of stains on various sanitary wares. The installation of a water purifier suited for water for use reduces the accumulation of these impurities and prolongs the cleaning periodicity of the water tank.

The UF filter is a type of membrane filter and has its pore size of 0.01 microns. (RO membrane 0.0001 microns). UF can filter contaminants, microorganisms and bacteria that contaminate water. It can also retain useful minerals in the water. UF has no discarded water.

Each area has different water conditions. Some areas may have more turbid water than others. As a result, the filter becomes clogged faster than its specified service life. In this regard, it may be advisable to install an additional coarse filter to prolong the service life of the filter.

The purifier can withstand the water pressure of 4 Bar, while the pressure of tap water is usually not more than 1 - 1.5 Bar. However, when a water purifier is installed in a customer's house with a water pump or in a condominium, there will be more water pressure. It is recommended to measure the water pressure before installation. If there is a high water pressure (from about 3 bar or more), it is recommended to install a water pressure reducing valve to reduce the expansion of the water filtration cylinders that has to withstand retaining water pressure for a long time. As for the problem of high retaining pressure in the cylinders, at first there might not be a leak in the cylinders; but when they are used for a longer time, the retaining pressure will push the cylinders to expand. Therefore, when a water purifier is installed with high-pressure water, it is also desirable to install a set of pressure relief.

When a water purifier is not used, there will be remaining water in the cylinders. When there is no water to replace it for a long time, it may cause odors, which is normal. Therefore, before water filtration, you should drain this water for about 1-2 minutes, the smell will disappear. If it does not disappear, the filter may expire or the filtering efficiency of the filter may deteriorate. Therefore, the filter should be replaced.

Carbon filter is very effective at adsorbing odors and chemicals. Therefore, if the water that passes through a water purifier has a smell, it means that the filter has deteriorated from long use, or there is a crack inside the filter, such that the water that does not pass through adsorbing carbon comes out, or the water contains a lot of chlorine, thus making the filter short-lived. It is recommended to install additional carbon filters or replace the carbon filters when there is an odor or use an RO system instead. However, tap water will come with chlorine to kill germs or there may be rust from the plumbing. Some seasons the water may taste salty, and sometimes there may be foreign matter from broken plumbing or plumbing repairs.

After using the water filter for some times, the filter will normally be clogged and the slowly running water will occur. However it is necessary to check the filter life, to check whether there is a bending stream of water and the tap water pressure is normal or not, because sometimes the slowly running water is not only caused by a clogged filter.

It is recommended to change the filter every year to maintain the water quality standards.

In the production of activated carbon filters, high temperature heat is used to form a cartridge such that the surface of the carbon filter becomes more alkaline; and when the water is chilled, white flakes will appear. The alkalinity of this carbon will gradually decrease by regular use of it. As for a way of solving the problem, when a new filter is used, the filtered water should be discarded for about 10 - 15 minutes such that the carbon filter will adjusted to the neutral pH range.

As for the recommended filter replacement period, there is a test that it is an appropriate period. Using a filter beyond the replacement period may cause us to drink water from a filter with deteriorating performance, and the water is not as clean as it should be.