BPA free, Food grade materials. HIGH EFFICIENT FILTRATION-5-Stage Under-Sink Reverse Osmosis Drinking Water Filtration System with certificated Thin-film composite RO membrane filters down to 0.0001 micron, Reduce 99% contaminant, including Heavy Metal, Arsenic, Lead , Mercury , Fluoride, Hardness, Cadmium, Chlorine, Taste, Odor, Asbestos, Hydrocarbons, Cyanide, Trivalent chromium and more 1000+ contaminants. HIGH QUALITY– All tube, fittings, storage tank, Ro membrane complies with ANSI standard 58 to provide healthy, safe, and pure water, certificated LEAD FREE deluxe kitchen sink faucet as last pure water guarantee in your home. EASY&CONVENIENT-Streamlined DIY filter installation; fits most under sink cabinets, the ratio of pure water and waste water is 1:2. FEED WATER PRESSURE: 40 – 100 PSI. PH:3.0 -11.0. MAX TDS :1000 PPM. What is dimension of installed Geekpure RO5? RO unit: Length 14.20 inch, Width 6.2 inch, Height 18.1inch. Storage tank: Diameter 9.45 inch, Height 14.4inch. What is 5stage filter and function? The 1st stage: PP spun filter, Remove sand, dirt, sediment. The 2nd stage: Granular carbon filter, Remove chlorine, taste & odors, very fine particulates. The 3rd stage: Carbon block filter, Further remove chlorine, taste & odors, very fine particulates. The 4th stage: TFC Ro membrane, Reduce 99% total dissolved minerals, heavy metal, Arsenic, Mercury, Iron, lead , Fluoride and 1000+ contaminants. The 5th stage:Post inline acid washed coconut carbon filter, Polish water for refined taste. What is in the box? 1 complete Ro water purifier with 5 pcs filters includes. Yes, BPA free , Lead free and food grade materials. It Is Recommended to Wait Until the Entire System Is Pressurized (Including Storage Tank&Faucet) and Re-Check for Any Leaks Before Leaving Installation Site. It Is Normal for Some Black Carbon Fines to Appear in The Water When Emptying the First 2 Tanks of Water. The First 2 Tanks of Water Produced Should be Emptied and Not Used. Push the Tubing All the Way in and Use Teflon Tape During Installation. The item “5 Stage Undersink Reverse Osmosis RO System Drinking Water Filter 75 GPD” is in sale since Wednesday, February 28, 2018. This item is in the category “Home & Garden\Kitchen, Dining & Bar\Small Kitchen Appliances\Water Purification\Water Filters”. The seller is “geekpure” and is located in TX. This item can be shipped to United States.