Buyer guide
RO vs UF water filter for B2B product selection
Selection notes
How to position RO and UF together
Use RO models when the buyer needs reverse osmosis drinking water products.
Use U4 when the buyer wants stainless steel UF and non-electric operation.
Offer both categories when a distributor needs a broader under-sink catalog.
RO vs UF comparison
Compare the treatment direction before comparing models
| Decision point | RO direction | UF direction |
|---|---|---|
| Purey models | A1 tankless RO, A2 smart faucet RO, and A3 non-electric RO | U4 stainless steel UF |
| Membrane direction | 0.0001um RO membrane | 0.01um UF membrane |
| TDS positioning | Choose RO when TDS-reduction capability is part of the buyer's treatment requirement. | UF does not reduce TDS in the same way as RO and should be positioned accordingly. |
| Power options | A1 and A2 are electrical tankless systems; A3 is the non-electric RO direction. | U4 is a manual, non-electric UF direction. |
| Catalog role | Use A1, A2, and A3 to cover different RO flow, feature, and installation stories. | Use U4 to add a visibly different stainless steel UF line. |
Selection workflow
Questions a distributor should answer first
What must the system address? Define the source-water conditions and whether TDS reduction is part of the treatment goal before choosing a membrane category.
What installation story fits the market? Compare electrical tankless RO, non-electric RO, and manual UF instead of choosing only by exterior design.
How will the product be sold? Share the target channel, desired price tier, flow direction, branding needs, and expected quantity when requesting model advice.
Purey model map
Four product directions for an under-sink catalog
Related pages
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Purey can respond faster when the first inquiry includes product direction and order context.FAQ
RO and UF product-selection questions
What is the main difference between RO and UF water filters?
RO uses a finer 0.0001um membrane direction in the Purey A1, A2, and A3 lines. U4 uses a 0.01um UF membrane and does not reduce TDS in the same way as RO.
Which Purey models are RO systems?
A1 tankless models, A2 smart-faucet models, and the A3 non-electric model are reverse osmosis product directions.
Which Purey model is the UF option?
U4 is the stainless steel, non-electric ultrafiltration option for buyers who need a non-RO line.
What information is needed before choosing RO or UF?
Share the source-water conditions, treatment goal, target market, installation context, desired flow direction, and catalog positioning before requesting model advice.