This is the replacement filter cartridge set for the Water Doctor GF3 800GPD RO Systems. It can provide you with pure water from your original faucet or a dedicated faucet. Easily get clean, safe, and healthy purified water with Water Doctor!

Innovative Multi-stage Filtration System: The Water Doctor GF3 800GPD RO Systems adopts an innovative multi-stage filtration process to effectively remove large particles such as heavy metals, chemical impurities, silt, sand, etc. Each stage has a specific function to ensure the final water quality:

• Stage 1: PPC Composite Filter (Pre-Filter)

  • Function: This is the system's first line of defense, primarily designed to protect the RO membrane. It is made of advanced PP cotton and a carbon rod. The outer PP cotton layer, with a filtration accuracy of 0.5 microns, effectively intercepts larger particles like silt, sand, and rust. The inner carbon rod then strongly adsorbs chemical impurities, especially residual chlorine, which prevents damage to the membrane.

• Stage 2: RO Reverse Osmosis Membrane (Core Filtration)

  • Function: This is the heart of the purification system. The RO membrane uses the principle of reverse osmosis to efficiently remove nearly all contaminants, including heavy metals, bacteria, viruses, limescale, and pesticide residues, allowing only pure water molecules to pass through.

• Stage 3: 3C Post-Carbon Filter (Taste Enhancement)

  • Function: As the final stage, this filter acts as a polishing step. It further adsorbs any potential residual odors and adjusts the water's taste, ensuring the purified water you drink is fresh, crisp, and clean.

Safe Materials: All filter cartridges for the Water Doctor GF3 800GPD RO Systems are made from food-grade materials for your peace of mind.

Extremely Long Service Life: When used with municipal water, each filter set has a maximum service life of up to 24 months or 2200 gallons.

Enjoy healthy and pure water directly from your tap and say goodbye to bottled water!