It is important to understand that reverse osmosis systems use cross filtration not standard filtration. Standard filtration is where the contaminants are collected within the filter media. Cross filtration is where the water crosses the filter with two outlets. The filtered water goes one way and the contaminated water goes another way. This way build up of contaminants is avoided. With cross flow filtration the water is allowed to sweep away contaminants and also wash the membrane surface clean.

How Pura Filters Work

Pura RO Filter Options

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Water conditions can vary even in the same community. Our PURA High Performance Drinking Water System can be configured to meet your specific requirements.

  1. Sediment Filters. Screens out sediments and particles.
  2. Carbon Filters. Improve water’s taste and odor, including chlorine odor reduction.
  3. Reverse Osmosis Membrane reduce dissolved substances up to 0.0002 Micron.
  4. Several filter options are available depending on your local conditions and requirements.

How RO Membrane Works

The purpose of the Reverse Osmosis membrane is to reduce the total dissolved solids in the water. The TDS is reduced about 95% by taking out all the dissolved solids larger than .0002 microns. As the purified clean water is processed through the reverse osmosis system, it is stored in a metal tank that has a bladder. The bladder has 7 to 9 lbs of air which helps to create pressure to push the water through the deck mounted faucet.