What Is Reverse Osmosis; What Does The System Do - SpectraPure 4-Stage Compact DWS-CLS-3 Operation Manual

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WHAT IS RO?

WHAT IS REVERSE OSMOSIS

Osmosis is a process in nature that allows fluid of a lower concentration to pass through a semi-permeable membrane
into a fluid of a higher concentration (See Figure 1). Because of the difference in salt concentration, pure water flows
through the membrane as though a pressure were being applied to it (Figure 2). The effective driving force is called the
osmotic pressure. As a rough guide, the osmotic pressure is equal to about 1 psi (pounds per square inch) per 100 ppm
Total Dissolved Solids (TDS). When enough pressure is applied to the solution with a higher concentration it can then pass
through the membrane into the solution of lower concentration. (See Figure 3). This is the basis of Reverse Osmosis.
Figure 1
Figure 2 Figure 3
Household water pressure is used to force tap water through the semipermeable R.O. membrane. The membrane only
allows the purest of water molecules to pass through it while over 98% of most salts and other impurities are rejected and
automatically rinsed from the membrane down the drain.

WHAT DOES THE SYSTEM DO?

SpectraPure's Coffee Lovers System uses household water pressure to reverse a natural physical process called osmosis.
Water, under pressure is forced through a semi-permeable membrane where minerals and impurites are screened out
and sent down the drain with waste water. These minerals and impurities are measured as total dissolved solids (TDS).
SpectraPure's Coffee Lovers System uses a Patented Dual Pass Technology that controls the pH and mineral content to
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levels optimized for perfect brewing (and drinking).
The undersink system connects to a house COLD water pipe for a water supply. The system includes replaceable sediment
and/or carbon pre-filters and a post carbon filter. The optional sediment pre-filter removes sand, dirt, rust particles and
other particulates while the carbon pre-filter takes chlorine and organics out of the feed water. The water then passes
through the RO membrane, through the post-carbon filter and the StablePure Re-minerization filter before being
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stored in the pressurized tank. The storage tank holds almost 4 gallons (10 gallons optional) of once treated RO product
water. When water is called for, the water stored in the tank passes through the carbon post-filter and the Stable Pure Re-
minerization filter AGAIN before being delivered. A built-in auto shut-off valve will shut the system off when the tank is full.
The system also uses a permeate pump which reduces water waste by 80% over other traditional systems.
The Coffee Lovers system gives you a continous supply of sparkling clear, delicious water for drinking, cooking, coffee-
making etc. Foods will look better and taste better too. The carful control of pH and water hardness at proper levels is also
necessary to ensure your expensive brewing equipment is not corroded (low pH) or clogged (excessive mineral content).
Thus reliability with the Coffee Lovers Water Treatment System is greatly improved over other systems and costly
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maintenance is avoided. The system eliminates the need to buy bottled water. Instead, it puts high quality water at your
fingertips.
SpectraPure®Inc.
480.894.5437 Call us toll-free 1.800.685.2783
2167 East Fifth St, Tempe, Arizona 85281
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