Frequently Asked Questions

Q: What is Reverse Osmosis ?

ro Reverse Osmosis is the reversal of the natural flow of osmosis. In a water purification system, the goal is not to dilute the salt solution, but to separate the pure water from the salt and other contaminants. When the natural osmotic flow is reversed, water from the salt solution is forced through the membrane in the opposite direction by application of pressure-thus the term REVERSE OSMOSIS. Through this process, we are able to produce pure water by screening out the salts and other contaminants.

Q: What is the membrane and how does it work ?

ro The membrane consists of several thin layers or sheets of film that are bonded together and rolled in a spiral configuration around a plastic tub (This is also known as a thin film composite or TFC membrane.) The material of the membrane is semipermeable : it allows water molecules pass through while acting as a barrier to dissolved solids (i.e.: mineral chemical contaminants). When the feed water stream passes across the surface of the membrane, the PurePro molecules penetrate the membrane surface, working their way around the spiral and collecting in the center tube. The remaining contaminants are concentrated and washed from the surface of the membrane down the drain.

Q: What is the actual process of the RO System ?


The raw tap water first flows through a 5 micron particle filter to remove dirt, rust and other sediment. The water then flows into a carbon briquette cartridge filter which takes out 98% of the chlorine and organic chemicals. The next stage of the process is block carbon filter to filter multi-chemical compounds and suspension. Next is the reverse osmosis membrane (TFC) which will separate 95-99% of the dissolved contaminants from the water molecules.

ro The contaminants are then washed down the drain. The next stage of the standard RO system process is the small carbon filter which removes the remaining traces of chemicals, tastes and odors. Typical Flow Chart The RO water is stored in a tank (when faucet is closed) before small carbon filter. Inside the tank is a balloon-like rubber diaphragm, pre-charged with 8-10 psi of air. As the tank fills, the air pressure increases and pushes the water out when the faucet is opened. The final element of the RO system is a faucet. It is installed on the kitchen counter or the sink.

Q: What contaminants does Reverse Osmosis Remove ?

roThe PurePro System contains a quality carbon filter which will remove more than 98% of organic chemicals from the water. These include THMs(chloroform), DBCP, lindane, TCEs(trichloroethylene) and many other organic chenicals. Ckick on the picture to see a list of other contaminants removed by the TFC membrane. The percentage of removal shown is a conservative estimate.

Q: Is RO water used for drinking only?

RO water can be also used for:
Washing fruits and vegetables, washing car, washing windows glass, watering domestic plants, for pets to drink, for ironing, preparing baby food, preparing drugs and much more...

If you have questions not covered here, please contact us!

Ceylan Water Shop