First column : 5-micron fiber PP. Using 100% food grade Polypropylene(PP) as material, the filter cartridge contains no wetting agents, solvents or binders. Removing efficiency can reach 98%.【NSF Certified】
Second column: Coconut shell activated carbon pellet UDF. Made of natural premium quality Coconut Shell Activated Carbon. The filter is good at removing Chlorine, unpleasant odor, color, spore, lead and microorganisms.【NSF Certified】
Third column: CTO Filter made of natural premium quality Coconut Shell Activated Carbon. The large surface area has a tremendous capacity to absorb Chlorine, unpleasant odor, color, spore, and remove microorganisms.【NSF Certified】
Fourth column: U.S. original FilmTecTM 500-gallon RO membrane. Their membrane has a 99% rejection ratio, and most other membranes cannot make that same claim.【NSF Certified】
