【Replacement for X12-Basic & X12-Alkaline RO System】 Tested by SGS, it effectively reduces TDS, PFOA, PFOS, Chlorine, Fluoride, Arsenic, Lead, and more.【Precious RO Filtration】 Certified by NSF/ANSI 58 &372. This reverse osmosis water filter boasts a reinforced 0.0001μm RO membrane to provide you with pure and healthy water.【1200G Large Capacity】 With a 1200GPD/1600GPD fast flow tare, this undersink water system provides you with the convenience and health of instant RO filtration.【Efficient & Sustainable】 Revolutionary 3:1 pure water ratio to save 1200% on water resources. Activate its energy-saving mode for efficient silent operation and 40% power saving.【Easy Replacement】 This water purifier is designed with an automatic water shut-off function when replacing it. No tools needed, just 3s quick replacement so you always have access to clean, refreshing water at home.