Best 5 Stages National RO system

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Clean and safe drinking water is essential for maintaining good health. With the increasing concerns about water quality, investing in a reliable water purification system is crucial. Among the various options available, National RO systems have gained popularity for their advanced filtration technology and efficient performance. Here, we present the best 5 stages National RO systems that provide excellent water purification and drinking water filtration.

1. Stage 1: Sediment Filter

The first stage of a National RO system typically involves a sediment filter. This filter is designed to remove large particles, such as dirt, sand, and rust, from the water. It acts as a barrier, preventing these contaminants from entering the subsequent stages of filtration. By eliminating sediments, the system ensures the longevity of the RO membrane and enhances its overall performance.

2. Stage 2: Carbon Filter

In the second stage, a carbon filter is employed to eliminate chlorine, bad odors, and unpleasant tastes from the water. This filter effectively removes organic compounds, chemicals, and residual disinfectants, improving the overall taste and odor of the water. The carbon filter also plays a vital role in extending the lifespan of the RO membrane by preventing chlorine from damaging its surface.

3. Stage 3: RO Membrane

The heart of any National RO system lies in its third stage, the RO membrane. This semi-permeable membrane is engineered to remove dissolved impurities, such as heavy metals, nitrates, sulfates, and more. It works on the principle of reverse osmosis, where water is forced through the membrane, allowing only pure water molecules to pass. This crucial stage ensures the removal of harmful contaminants, providing you with clean and safe drinking water.

4. Stage 4: Post-Carbon Filter

After passing through the RO membrane, the water enters the fourth stage, which involves a post-carbon filter. This filter is responsible for further improving the taste and odor of the water by removing any residual impurities. It also helps in maintaining the water’s pH balance and enhancing its overall clarity.

5. Stage 5: UV Sterilization or Mineralization

The final stage of the National RO system offers two options: UV sterilization or mineralization. In the UV sterilization stage, the water is exposed to ultraviolet light, effectively eliminating any remaining bacteria, viruses, or other microorganisms that may be present. This step provides an extra layer of protection, ensuring the water is free from harmful pathogens.

Alternatively, some National RO systems offer mineralization as the final stage. In this stage, essential minerals, such as calcium and magnesium, are reintroduced into the purified water, enhancing its taste and nutritional value.


Investing in the best 5 stages National RO system is a wise choice for ensuring clean and safe drinking water. These advanced systems remove sediments, chlorine, dissolved impurities, and microorganisms, providing you with high-quality water for your daily needs. Consider the various stages and features offered by different National RO systems to find the one that best suits your requirements. Make an informed decision and enjoy the benefits of pure and healthy drinking water.