What are the 7 Stages of Reverse Osmosis System Machine?

Consumers are often confused by the various classes of traditional reverse osmosis system machines on the market, especially when it comes to the technology used to purify water offered by a specific type of water purifier. Among them, the traditional RO machine with 7 stages is superior to other models of water purification. It provides 100% purified water while having the outstanding advantage of putting beneficial minerals in the pure water.

What are the 7 stages of traditional RO machines?

First of all, the first stage is a 5-micron PP sediment filter. 
We should all have noticed that there are contaminants visible to the naked eye in the tap water we receive directly. Then the function of the PP sediment filter is to remove colloids, large particles of sediment, red worms, sand, and rust from the water.

And then, the second stage is the granular activated carbon filter.
YUNDA uses natural coconut shell-activated carbon particles, which effectively remove small molecules of organic matter and residual chlorine from water, adsorbs foreign colors, odors, and heavy metal ions from water, and improves taste without causing any harm to the human body.

The third stage is a 5-micron coconut shell carbon block filter.
The same natural activated carbon material is used, in the form of carbon blocks. It maintains the characteristics of large surface area, excellent pore formation, better filtration, and further filtration of water.

Up to this point, the first three stages belong to the pre-filtration stage of the traditional RO machine, and the cartridge cycle is generally 6-12 months. Because it needs to filter the impurities in the water, in order to ensure the filtering effect, the replacement cycle can not be too long.

In the fourth stage, the filtration precision is only 0.001 micron RO membrane.
Here you can imagine the RO membrane as an extremely small sieve, able to sieve out all the impurities except pure water. Because the RO membrane filtration accuracy is equivalent to one-millionth of a hair, ordinary bacteria and viruses are 5000 times it, so a variety of viruses, bacteria, heavy metals, solid soluble matter, pollution of organic matter, calcium and magnesium ions simply can not pass.

The fifth stage is post-activated carbon.
In terms of salt and residual chlorine, both the front activated carbon is needed to protect the RO membrane and the rear activated carbon is needed to adsorb the leaks and further improve the taste. Here it is recommended to change the filter every 12 months.

The sixth stage is the mineral alkaline Lon filter.
Modern medical research shows that the healthy body fluid is weakly alkaline, if too much acidity and acidic body, will lead to a decline in human immunity, which will have a negative impact on human health. Adding this filter can improve the taste and get pure water which is good for human health.

7th stage, weak alkaline on the ball.
After all the previous stages have been completed, the mineralized ball is a composite of several natural beneficial minerals, which can be dissolved in trace amounts to continuously dissolve the macronutrients and trace elements that are beneficial to human health. Some of these trace elements are usually necessary for our body and have a beneficial effect on our health.

For the latter two stages, we recommend changing the filter cartridge every 6 months.

Above is the introduction to the 7-stage traditional RO machine. Please contact us directly for any questions you do not understand.