Liquos® Stages of Operation

The Liquos® RO system uses 4-stages of filtration to process ordinary tap water into Premium drinking water. Customers with pretreatment concerns or issues should contact us directly to discuss filtration options available. For most customers we recommend servicing your system once a year. Osmotron as a service to our customers tracks each system and will notify you when scheduled filter replacement is due. Filters can be easily replaced and the system serviced by the homeowner.

Stage 1. Sediment Filtration.

The sediment filter is rated at 10 microns and prevents large particles from fouling the pre carbon filter. The first stage is typically replaced every 6-12 months depending upon your water’s sediment level.

Stage 2. Pre Carbon Block

The Activated Carbon Block of the 2nd stage removes organic contaminants such as herbicides, industrial solvents and more specifically free chlorine---which over time damages the thin film membrane material. The 2nd stage offers even finer filtration trapping particles as small as 1 micron. Replacement is required every 6-12 months based on your particular water chemistry.

Stage 3. 36 GPD TFC Membrane

Reverse osmosis is highly effective in removing several impurities from water including: total dissolved solids (TDS), turbidity, asbestos, lead, heavy metals, radium, and many dissolved organics. The reverse osmosis process uses a semi-permeable membrane that separates (higher molecular weight) contaminants from tap water using household water pressure. Treated water passes through the microscopic pores of the membrane and into the systems storage reservoir. The accumulated impurities left behind are washed away as concentrate or brine.
Eventually dissolved minerals will accumulate on the membrane surface causing the production and/or the rejection to fail. If you have particularly hard water (>7 grains) a water softener will promote membrane life span since softened water is much easier for the membrane to process than the calcium / magnesium found in hard water. Membrane life expectancy is 2-4 years depending on your water chemistry. Typical TDS (Total Dissolved Solids) rejection is >90%.

Amtrol 4.4 Gallon Tank
After water has been processed by the membrane it is held in the sealed storage tank. A reverse osmosis storage tank is actually two tanks in one: one side of the tank holds water in an inert rubber bladder, while the other side holds an air charge of 7 psi (with no water in the tank). As processed water fills the bladder reservoir, the system back pressure gradually increases. This is the actual pressure available at your RO faucet and can go no higher than the feed water pressure of your system. Conventional RO systems leave a lot of storage capacity to waste since the system is forced to shutoff at only 66% of line pressure. The Liquos® design allows the storage tank volume to reach 95% of feed pressure, allowing more water (at a higher pressure) to fill the tank. For a busy household that extra storage and pressure will come in handy.

Stage 4. Post Carbon Block

RO is not effective at removing lighter-weight VOCs (Volatile Organic Contaminants), such as THMs (a chlorine byproduct) and TCE(trichloroethylene), and certain pesticides. These compounds are either too small, too light, or of the wrong chemical structure to be screened out by an RO membrane.
The fourth and final stage of the system filters only the water held in the storage tank. Upon demand water held in the storage tank passes through the activated carbon block removing any off tastes or residual contaminants.

Stage 5. Ultra Violet (UV) Sterilization

The optional UV sterilizer deactivates all potential viruses and bacteria before consumption. 115VAC Required.