It is an integrated two-in-one system, and this is the best type of home purification currently: Under the sink: 7-stage RO purification device + tank Above the sink: Softec hot/cold water dispenser connected directly to the filter Specifications of the 7-stage device This is the standard order for most devices sold in Saudi Arabia: Stage 1 - Sediment Filter 5 micron: Holds dust, sand, and rust. Stage 2 - Granular Activated Carbon (GAC): Removes chlorine, gases, odors, and bad taste. Stage 3 - Solid Carbon Block (CTO): Confirms chlorine removal and protects the membrane. Stage 4 - RO Membrane, the heart of the device: A reverse osmosis membrane, 0.0001 micron, removes 95-99% of dissolved salts (TDS), heavy metals, bacteria, and viruses. Its production capacity is usually 75-100 gallons per day. Stage 5 - Post Carbon Filter: Improves the final taste and odor after the tank. Stage 6 - Mineral / Calcite Filter: Restores beneficial minerals like calcium and magnesium to the water that were lost in the RO stage. Stage 7 - Alkaline / Infrared Filter: Raises the pH and makes the water slightly alkaline, better for drinking and digestion. Some types also have a UV filter to kill bacteria. Tank: The one on the right in the picture, with a capacity of approximately 12 liters (3.2 gallons), stores purified water, ready for use. Softec Water Dispenser: • Instant cold cooling < 10 degrees • Hot heating > 85 degrees for tea and coffee • 2 faucets + child safety lock for hot water • Directly connected, no need for bottles. Benefits of this specific system: 1. 100% healthy water: Removes chlorine, taste, odor, rust, and most importantly, high salts that cause kidney stones and strain on kidney dialysis, especially with Riyadh's water. 2. Saves money and space: Eliminates the need to buy water bottles. One tank is enough for a family. 3. Instant hot and cold: The dispenser replaces a kettle and a water refrigerator, excellent for the kitchen and living room. 4. Protects appliances: Purified water does not cause scaling in kettles, irons, and coffee makers. 5. Better taste for food: Tea, coffee, and cooking taste significantly better with RO water. Important tips before buying: • Ask about the type of membrane; the original American Filmtec is the best. • Filter replacement: Stages 1-2-3 every 3-4 months, Stages 5-6-7 every year, the membrane every two years. • Install a TDS meter with it to know when to replace the filters. • The dispenser in the picture takes up space on the countertop. There is another type, a floor-standing dispenser, with the same concept if your kitchen is small.