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Re: Types of Reverse Osmosis membranes



There are essentially two types: CTA (cellulose triacetate) and TFC (thin
film composite).  TFC membranes cannot be exposed to chlorine, such as
that coming out of tapwater, therefore a carbon prefilter is required. 
CTA, on the other hand, must have chlorinated water in order to prevent
bacterial growth on the membrane material itself.  In general,
"high-performance" membranes are of one of these two types.  For the most
part, TFC membranes have a higher removal rate than CTA.

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snowcat24 at juno_com
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