Why Choose This System?

• 5-stage filtration — comprehensive purification with taste-polish and mineral restore.
• Hi Alkaliser re-mineraliser — raises pH (~8.5–9.5), adds Ca/Mg/K, and oxygen-enriches output.
• Low waste ratio (~1:1) — efficient water usage with flush technology.
• High output — DOW FilmTec ~300 L/day @ 50 psi; can reach ~450 L/day at higher pressure.
• Compact under-sink install — dedicated lead-free faucet included.
• Pressure limiting valve — included for system protection.
• NSF-certified components — compliant with Australian Standards.

How It Works: 5-Stage Filtration

• Stage 1 — Sediment pre-filter removes dirt, sand & particulates.
• Stage 2 — Carbon block reduces chlorine, chemicals & odours (≈37,000 L).
• Stage 3 — DOW FilmTec RO membrane removes ~96–98% fluoride, heavy metals, nitrates & dissolved salts.
• Stage 4 — Post-carbon polish enhances taste and reduces residual organics.
• Stage 5 — Hi Alkaliser re-mineraliser raises pH, adds minerals, oxygen-enriches for fresh mouthfeel.

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 Hi Alkaliser lifts pH back above 7 for balanced taste.

System Specifications

• Membrane capacity — ~300 L/day @ 50 psi (350 kPa); up to ~450 L/day at higher pressure.
• Waste ratio — ~1:1 (conditions & water temp dependent).
• pH output — typically 8.5–9.5 with Hi Alkaliser (source-dependent).
• Operating pressure — minimum 40 psi (280 kPa); optimal ~50 psi (350 kPa).
• Main unit size — ~42 cm (H) × 35 cm (W) × 14 cm (D).
• Pressure limiting valve — included; WaterMark compliant.
• Components — NSF-certified, built to Australian Standards.

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) — common in older homes with separate taps & copper lines. Details/Instructions

Storage Tank Options

• Standard — 9 L stainless steel tank (NSF certified).
• 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) — order here.
• 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:

Performance Data Sheets

• Membrane — DATA SHEET
• Sediment — DATA SHEET
• Pre Carbon (Omnipure) — DATA SHEET
• Post Carbon (Omnipure) — DATA SHEET
• Remineraliser (Calcite) — DATA SHEET

Additional Information

Cartridge replacement tutorial

Helpful Resources

• Reverse osmosis storage tanks — details
• Waste ratios explained — learn more
• Mains connection install guide — how each adapter is installed
• Warranty (5 years) — see terms
• Selection advice — which system suits me?

Warranty

The PSI-021-5RM-HA comes with a 5-year warranty covering defects in materials and workmanship under normal use. Built with top-grade components for durability and reliable performance — see full warranty terms for details.