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Reverse Osmosis



Pushing water through a semi permeable membrane using external pressure is known as reverse osmosis.

Most water impurities do not pass through the membrane, which has a molecular weight cut off in the 300 Dalton range.





The impurities collect on the membrane surface and are flushed to the drain.

A popular pre-treatment before distillation, or deionazation systems, reverse osmosis can also be used to purify water for general use such as glass and plasticware washing.


Primer: Lab Water Purification Technologies
  • Distillation
  • Reverse Osmosis
  • Deionization
  • Filtration
  • Ultrafiltration (UF)
  • Adsorption
  • Ultraviolet (UV) Oxidation
  • Combination Ultraviolet Oxidation and Ultrafiltration

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