PSI-021-5RM 5 Stage Re-Mineralizing, Oxygen rich alkalising
- USA made Filters
- USA made Housings
- pH Neutral
- 5 Yr Warranty
Reverse Osmosis 5-Stage System – Alkalising, Re-Mineralising, Oxygen-Rich
The PSI-021-5RM delivers pure RO water, restores beneficial minerals, oxygen-enriches the final stage, and balances pH — for great-tasting, health-conscious hydration from a sleek dedicated faucet. Built around a genuine DOW FilmTec membrane with a low ~1:1 waste ratio.
Why Choose This System?
This 5-stage RO pairs high rejection performance with re-mineralising, alkalising and oxygen-enrichment stages to elevate both quality and taste.
- Advanced 5-stage filtration — includes dedicated alkaliser/ re-mineraliser.
- Premium DOW FilmTec membrane — ~300 L/day @ 50 psi with ~1:1 low waste ratio.
- Alkalises & adds minerals — boosts pH and flavour with calcium & magnesium.
- Oxygen-rich output — fresh mouthfeel from the final stage.
- Compact undersink design — dedicated lead-free faucet included.
- NSF-certified components — meets Australian & international standards.
- Auto shut-off valve — prevents tank overfill and conserves water.
How It Works: 5-Stage Filtration
- Stage 1 — 1-micron sediment (U.S.) removes rust, sand & particulates.
- Stage 2 — Omnipure carbon block (U.S.) reduces chlorine, chemicals & odours (≈37,000 L).
- Stage 3 — DOW FilmTec RO membrane removes ~96–98% fluoride, heavy metals, nitrates & dissolved salts.
- Stage 4 — Omnipure coconut carbon post-filter polishes taste and reduces residual VOCs.
- Stage 5 — Re-mineraliser & alkaliser adds calcium/magnesium, oxygen-enriches, balances pH.
PFAS Reduction & Water Quality
Carbon → membrane → carbon is a proven sequence for broad contaminant reduction, including PFAS (e.g., PFOA). Typical Australian town water is ~pH 7–7.5. After the membrane, minerals are very low and pH can drop to ~pH 6; the re-mineraliser lifts pH back above 7 for balanced taste.
System Specifications & Features
- Housings — QMP-300-HP, NSF-certified; burst rating 575 psi (≈4000 kPa).
- Operating pressure — minimum 40 psi (280 kPa); optimum ~50 psi (350 kPa).
- Main unit size — ~42 cm (H) × 42 cm (W) × 14 cm (D).
- Waste ratio — ~1:1 (conditions & water temp dependent).
Connection Types
- ½″ Flick-Mixer Braided Line — most common in modern kitchens. Fit the supplied adapter with the rubber washer, then re-attach the braided hose. Details/Instructions
- ¾″ Dishwasher Adapter — use the dishwasher cold-water outlet where no dishwasher is installed. Details/Instructions
- ½″ Tee Olive Fitting (Copper) — typical for older homes with separate taps and copper lines. Details/Instructions
Storage Tank Options
- Standard — 9 L stainless steel tank (NSF certified).
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Alternative sizes:
- 4.2 L — 33 cm (H) × 20.5 cm ⌀
- 9 L — 39 cm (H) × 24 cm ⌀
- 12 L — 39 cm (H) × 27.5 cm ⌀
- TANK DATA SHEET
Faucet Options
Bundle & save: upgrading your faucet with the system is cheaper than buying it later.
Browse Faucet Range, then select your choice from the Faucet Option dropdown above. Fits most sink/benchtop holes (12–13 mm) and standard thicknesses.
Replacement Cartridges & Maintenance
- Annual cartridge pack (ROCDU-02) — order here.
- RO membrane (~4 years) — order here.
- Re-mineraliser / alkaliser (~2 years) — cartridge or calcite refill.
- Membrane care: flush the membrane for ~15 minutes every 2–3 months; replace about every 4 years for best performance.
Performance Data
The system demonstrates high contaminant removal rates across both inorganic and organic compounds:
Inorganic
- Aluminum 99%
- Arsenic 98%
- Alum 95%
- Cadmium 95%
- Calcium 98%
- Chromium III 98%
- Copper 90%
- Fluoride 98%
- Iron 98%
- Lead 90%
- Magnesium 98%
- Manganese 90%
- Mercury II 85%
- Nitrate 90%
- Potassium 95%
- Selenium 95%
- Silver 98%
- Sodium 95%
- Strontium 90%
- Sulfate 90%
- Zinc 98%
- Total Dissolved Solids 95%
- Asbestos 99%
Organic
- Chlorine 98%+
- Herbicides 98%+
- Pesticides 98%+
- DDT 98%+
- Endrin 90%+
- Lindane 98%+
- Aldrin 98%+
- Benzene 98%+
- VOCs 98%+
- Atrazine 98%+
- Fluoranthene 98%+
- Phenol 98%+
- Trihalomethanes 98%+
- Toxaphene 98%+
- Dichloromethane 98%+
- Chloroform 98%+
- Trichloroethylene 98%+
- Perchloroethylene 98%+
- Tannic Acid 98%+
- Methoxychlor 98%+
- PCB 98%+
Performance Data Sheets
- Membrane — DATA SHEET
- Sediment — DATA SHEET
- Pre Carbon (Omnipure) — DATA SHEET
- Post Carbon (Omnipure) — DATA SHEET
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Remineraliser — DATA SHEET
Additional Information
Cartridge replacement tutorial
Warranty
This PSI 5-stage reverse osmosis system includes a 5-year warranty covering defects in materials and workmanship under normal household use. Built with high-grade components from trusted brands — see full warranty terms for details.
