Filter 1:
Polypropylene foam filter cartridge removes sand, rust, silt and other sediments up to 5 Micron
Filter 2:
Polypropylene foam filter cartridge removes sediments up to 1 Micron
Filter 3:
Activated carbon block. The carbon is formed in specially pressured, high density blocks to gain high adsorption rate of chlorine, other chemicals and multiparticle organic substances.