The first stage (Cotton filter):
It consists of a cotton candle made of polypropylene that purifies up to 5 microns as it removes solid impurities such as sand, clay, algae and rust.
The second stage (granular carbon):
Made of thermally activated carbon, its function is to remove dissolved gases and treat water from unwanted substances such as chlorine, taste, smell and color.
Third stage (carbon steel)
It is made of carbon steel with pores of 1 micron and its function is to remove the smallest impurities before the water enters the fourth stage.