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Originally Posted by UnderWorldAquatics
Ill try to get some specs.... almost all TFC membranes are made by the same manufacture Im pretty sure they are the same unit?
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there are actualy 4 seperat manufactures that I know of now and they all use different construction techneques and materials for TFC. DOW filmtech is the best and is patented so the others cannot make them the same. some of the differences you will notice if you can get ahold of specs is the rejection rate for different minnerals, the ability to withstand chlorine breakdown, and the amount of time they will last. depending on the construction of the insides they will plug up faster ect. I have a couple cheepies at home. if I haven't throwen them in the garbage I will cut them up and compare the insides to a DOW so you can see the differences.
Brad you can get a 75 gpd DOW in town for about 75 or 80. I can probably get it even cheeper than that as I think my cost on a 100 DOW is about 80.00
Steve.
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07-15-2004, 12:27 PM
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