Home water purification filter with RO reverse osmosis system - Hadeer brand - Made in Taiwan. This is one of the most common types of filters in Saudi Arabia, and here is its detail: 1. Specifications shown in the picture This is a classic 5-stage model with a pump and a tank (the tank is not shown in the picture but comes with it): • Stage 1 - PP Sediment 5 micron: The transparent filter on the right. Removes large impurities, sand, rust, and mud. • Stage 2 - Loose Carbon Granular: The middle filter. Granular activated carbon removes chlorine, gases, taste, and odor. • Stage 3 - Carbon Block: The left filter. Compressed carbon block to ensure removal of chlorine, organic matter, and protect the membrane. • Stage 4 - RO Membrane: The white cylinder behind the filters. This is the heart of the device, the reverse osmosis membrane with pores of 0.0001 micron, removes 96-99% of salts, heavy metals, and bacteria. • Stages 5 and 6 shown above: ◦ Blue: Post Carbon filter to improve the final taste. ◦ Yellow: In Hadeer models, it's a mineral/Alkaline filter that adds beneficial minerals and adjusts the pH. And there are additions clearly visible in the picture: • Pressure Gauge on the left to monitor water pressure and pump operation. • Booster Pump to strengthen the pressure if the house pressure is weak, which is necessary for the RO system. • ISO 9001, NSF, and Water Quality certificates written on the device. Its production capacity is usually 75 to 100 gallons per day (about 280 - 380 liters/day) and it comes with a 12-liter tank. 2. Benefits for you Health-wise: • Removes excess chlorine that causes dryness and allergies. • Removes high salts (salinity), nitrates, lead, arsenic, and pesticide residues. • Protects the kidneys and significantly improves the taste of tea, coffee, and food. • Prevents the formation of scale and deposits in kettles and dishes. Economically: • Stop buying bottled water, the cost is much lower in the long run. • Protects the water heater and washing machine from calcification. 3. Points you need to know before buying • This type wastes water: for every 1 liter of pure water, 2-3 liters are discharged into the sewer, which is normal for RO. • Requires changing filters 1-2-3 every 3-6 months, the membrane every 18-24 months, and the post-carbon every year. • If your home water is government-treated and already has low salinity, you can suffice with a 3-stage filter without RO. RO is excellent if your water is from a well or has high salinity.