Reverse Osmosis
Reverse osmosis is a scientific application where dissolved contaminants in water are physically removed by passing it under pressure through a special membrane. The process is similar to the way your body's cells absorb water. Reverse osmosis will remove up to 98% of dissolved contaminants such as; minerals, salts, metals and organic matter that may be present in a water supply.
Pores in the reverse osmosis membrane are so small that only water molecules pass through. The comtaminants are rejected and drained away. A comparison of molecular size to the pore size of the reverse osmosis membrane is shown to the right.

Approximate Rejection Rates Of Various Impurities
| DISSOLVED SOLIDS | REMOVAL PERCENT (%) | DISSOLVED SOLID | REMOVAL PERCENT (%) |
|---|---|---|---|
| Aluminium | 99 | Magnesium | 99 |
| Bacteria | 99 | Manganese | 99 |
| Barium | 92 | Mercury | 97 |
| Bicarbonate | 98 | Nitrate | 97 |
| Bromide | 96 | Organic Pesticides | 99 |
| Cadmium | 98 | Phosphate | 99 |
| Calcium | 98 | Polyphosphate | 99 |
| Chloride | 98 | Pottasium | 98 |
| Copper | 99 | Radium | 98 |
| Cyanide | 96 | Silica | 98 |
| Detergents | 99 | Silicate | 98 |
| Fluoride | 98 | Sodium | 96 |
| Iron | 99 | Sulfate | 99 |
| Lead | 99 | Zinc | 99 |







