6-stage reverse osmosis · With storage tank
Puronics Pur-Alkaline PC6-38-B
A six-stage under-sink reverse osmosis system with a storage tank, long-neck faucet and a final alkaline stage. It runs on your water pressure alone, with no electricity.
- Six stages, including the RO membrane
- Storage tank and long-neck faucet
- No electricity needed
- Quality-control results packed with each system
No prices online. Puronics systems are quoted after a free in-home water test or a consultation.
Six stages. One faucet.
Reverse osmosis for drinking and cooking water at the kitchen sink, from a slim system that fits under most sinks.
The six stages
What each stage does.
- Sediment pre-filter captures particles as small as 2/10,000 of an inch.
- Carbon pre-filter (5-micron).
- Second carbon pre-filter (5-micron).
- Reverse osmosis membrane. Puronics lists reduction of sodium, selenium, arsenic, nitrates and nitrites, lead, copper, cadmium, and hexavalent and trivalent chromium (if present), plus pharmaceuticals. Treated water is held in a sealed tank.
- Carbon block post-filter.
- Alkaline post-filter.
Why homeowners pick it
Simple, quiet, no plug.
No electricity
Runs on household water pressure, so there is no outlet to find under the sink.
Slim profile
Designed to fit in a standard kitchen sink cabinet alongside the storage tank.
Long-neck faucet
A dedicated drinking-water faucet, with a faucet adapter included.
Checked before it ships
Puronics includes quality-control test results in the package.
Specifications
Puronics Pur-Alkaline PC6-38-B at a glance
| System type | Under-sink reverse osmosis with storage tank |
|---|---|
| Stages | 6: sediment, carbon, carbon, RO membrane, carbon block, alkaline |
| Sediment stage | Particles as small as 2/10,000 of an inch |
| Pre-filters | Two 5-micron carbon filters |
| Power | None required |
| Faucet | Long-neck faucet, faucet adapter included |
| Model | PC6-38-B |
| Price | Quoted after your free water test or consultation |
Source: Puronics Pur-Alkaline product brochure (05/05/25). Reduction depends on your water and on keeping to the filter-change schedule.
Specifications are from the Puronics Pur-Alkaline brochure. Reduction claims are the manufacturer's; your quote lists the exact configuration, filter schedule and warranty.
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Tankless RO · 600 GPDCommon questions
Tank or tankless: which should I choose?
The Pur-Alkaline stores treated water in a tank and needs no power. The WÜDR Tankless RO 800 and Tankless RO 600 are tankless and need an outlet. See tankless vs. tank RO.
Does it need electricity?
No. It runs on your household water pressure.
What does the alkaline stage do?
It is the sixth and final stage, after the carbon block. It changes the taste profile of the water.
Can it be used on well water?
Often, but well water should be tested first. Iron, hardness or sediment may need treatment before the RO system.
How much does it cost?
We don't list prices online. You get a written quote, including installation, after a free test or consultation.