Yes, the membranes are made by few manufacturers. The question is how
are you going to "pot" /encapsulate the 'ends' of the sprial with
molten polypropylene, etc. to make them seal and be dimensionally
correct for your housing? Its not ONLY the membranes; but, also the
endcaps, the side seals, the separators, the upstream and downstream
support materials. It also includes 'integrity' testing as the
membrane is not a consistant product that has a high manufacturing
yield .... much of this stuff has 'holes' and needs to be verified,
etc.

Go to www.osmonics.com etc. and see if you cant find a spiral wrapped
package that fits into your housing.

Better yet, if you have to ask these questions, better trust someone
other than yourself to construct the cartridge.


In article , D.Rousselon
wrote:

"Geoffrey W. Schultz" a écrit dans le message de
.17...
Does anyone have a source for water maker RO membranes? They all seem to
be made by DOW and the various water maker manufactures mark them up a LOT
as they're now a *marine* product. :-) A friend of mine says that he
bought some online for about 1/3 of what the water maker manufacturer was
asking, but he's off cruising and can't remember the web site.

-- Geoff

Ask to Mark Fruehauf
www.great-water.com

Best regards

DOMINIQUE ROUSSELON