Best pricing on RO filters

[Tankster]

Where does everyone get their RO filters & membranes from? I'm running a Air, Water & Ice Typhoon III and have bought filters from them as well as Buckeye Field Supply but haven't priced them out recently.

[MizTanks]

Looking at one on Ebay myself~Abundant Flow Water Systems Inc.~3 stage RO/DI unit for 129$

[Steven Pro]

I always buy SpectraPure brand.

[ReeferRob]

Jamie
Did you check out bulkreefsupply.com? Great prices and comes with free filters and reward points for future purchases!

[MizTanks]

Yuppers I sure did~I'm looking at the 3-4 stage~figuring out da $$$~prices are good though~either way I'll be picking one or the other for sure.

[Tankster]

Air Water & Ice 10% off discount code 34311

[BuckeyeFieldSupply]

If low price is what you are after, and the only thing you're interested in, I'm sure ebay would be the way to go. I sure wouldn't stear you in that direction however!

[jimsflies]

Can you described some of the differences between good membranes and cheap ones? What should we be on the look out for?

[BuckeyeFieldSupply]

Remember that RO membranes filter based upon very small partical sizes - down at the molecular level. So although two membranes may look similar from the outside - the quality of the materials and manufacturing process, and qa/qc throughout is crucial. Two major criteria are:

Better membranes for this hobby produce purified water at lower pressures (e.g., Filmtec membranes are spec'ed at 50 psi while the reset of the industry is at 60 or 65 psi).

Better membranes have higher rejection rates (they reject/don't allow to pass more impurities).

If you see a membrane advertised where the rejection rate isn't specified - think twice about buying it.

How can a buyer know the quality that went into production of the membrane? Good luck. Here is one instance where buying a name brand product makes sense. There is a reason Filmtec residential membranes are sold all over the world and are the standard by which other residential membranes are compared.

Russ

[ec1452]

you could try www.filterdirect.com tankster thats were i get mine from

[parrot head]

I just purchased a filmtec 75 gpd membrane for 23.00 off ebay and am very happy with it.

[AZDesertRat]

For $30 you can get a batch tested and treated RO membrane good for 90 GPD at 60 psi.
http://www.spectrapure.com/email/customer-appreciation.html#1

When buying replacements stick with quality over price, the sole purpose of the prefilter and carbon block are to protect that RO membrane and prolong its useful life, don't skimp on quality.

As Russ at Buckeye pointed out, this is one area where sticking with the name brand pays off. Name brands are ANSI/NSF and UPC approved meaning they have been through rigorous testing and quality control checks, you really do get what you pay for.