PSI 021-Alka



  • USA Made Filters
  • USA Made Housings
  • pH 8.5 +
  • 5 Yr Warranty


Regular price $680.00
Regular price $680.00
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PSI 021-Alka 5-Stage Reverse Osmosis System – Ionised Alkaline Water

Now proven to reduce PFAS (including PFOA) up to 99.9% when properly maintained.

 

Meet the newest member of our RO range: PSI 021-Alka. Built in Australia from premium U.S./Taiwan components, it pairs a genuine FilmTec 75 GPD (~300 L/day) membrane with an Alkahydrate PI stage to lift pH to around ~8.5 and add beneficial minerals (Ca/Mg/K) for a smoother taste. A chlorine/chloramine-targeting pre-filter makes it ideal for Australian town water.

Why Choose This System?

  • Ionised alkaline finish — typically ~pH 8–8.5 with a clean, rounded taste.
  • FilmTec membrane — 75 GPD (~300 L/day) with excellent rejection.
  • PI mineral cartridge — re-adds minerals and buffers pH.
  • Flush valve — helps minimise scale build-up and extend membrane life.
  • Certified & compliant — components to NSF/ANSI and Australian Standards.
  • Optional alkaliser (alt media) — additional pH buffering if desired.

How It Works: 5-Stage Filtration

  • Stage 1 — 1 µm sediment removes dirt, rust and sand to protect the carbon and membrane.
  • Stage 2 — Coconut carbon block (Matrikx CTO) reduces chlorine/chemicals & odour to improve taste.
  • Stage 3 — DOW FilmTec RO membrane removes ~96–99% fluoride, heavy metals & dissolved solids.
  • Stage 4 — Alkahydrate PI cartridge re-mineralises and raises pH for alkaline water.
  • Stage 5 — Omnipure post-carbon final polish for crisp, fresh taste; adsorbs residual organics.

PFAS Reduction & Water Quality

RO’s carbon → membrane → carbon sequence is highly effective at reducing a broad range of contaminants, including PFAS (e.g., PFOA). Most Australian supplies are ~pH 7–7.5; after the membrane, low mineral content can drop pH to ~6. The Alkahydrate PI stage buffers it back above 7 (typically ~8–8.5) for smoother, balanced water.

System Specifications & Features

  • Premium housings — QMP-300-HP; burst strength ~575 psi (≈4000 kPa).
  • Membrane — FilmTec 75 GPD (~300 L/day) production.
  • Pressure limiting valve (PLV) — included for system protection/compliance.
  • Minimum pressure — 40 psi (≈272 kPa); ideal ≥50 psi (350 kPa).
  • Main unit size — 52 cm (H) × 42 cm (W) × 14 cm (D).

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 to the adapter’s ½″ male thread. 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 copper pipes to separate taps. Cut 45–50 mm from the ½″ copper line, deburr, install the tee, then proceed with the standard PLV/tubing steps. Details/Instructions

Storage Tank Options

  • Standard — 9 L stainless steel tank (NSF certified).
  • Alternative sizes:
    • 4.2 L — 33.5 cm (H) × 20.5 cm ⌀
    • 9 L — 39 cm (H) × 24 cm ⌀
    • 12 L — 39 cm (H) × 29 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.

Maintenance & Replacement Cartridges

Performance Data

The system demonstrates high contaminant removal rates across both inorganic and organic compounds:

Inorganic

  • Aluminum 99%
  • Arsenic 98%
  • Arlum 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

Warranty

This system is backed by a 5-year warranty for peace of mind. Built with premium components and tested for durability and performance. Covers defects in materials and workmanship under normal use — see full warranty terms for details.