This basic series is ideal for wide range of applications. It produces RO, Deionized water and Ultrapure water. The organic rejection rate is greater than 99% using reverse osmosis. The resistivity reaches up to 18.2M?.cm which completely meets the highest grade I standard. - Human engineering design, high-strength, streamline plastic shell. - One time injection molding process case, material: Polypropylene PP. - Elegant and compact case, integrating pre-filter, RO, DI, UV, UF and terminal filter into one. - All filters are built-in, for the smallest outside space.