PSI-021-5RM-HA 5 Stage Re-Mineralizing, Oxygen rich Hi alkalising



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


Regular price $760.00
Regular price $760.00
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PSI-021-5RM-HA 5-Stage Re-Mineralizing Reverse Osmosis System

Experience ultra-pure, oxygen-rich, and high-alkaline water directly from your tap with the PSI-021-5RM-HA Reverse Osmosis System. Designed for efficiency and superior performance, this 5-stage system features advanced filtration technology and a refillable Hi Alkalizer to enhance water quality and taste.

Key Features

  • 5-Stage Filtration – Comprehensive purification process for maximum contaminant removal.
  • Re-Mineralizing Hi Alkalizer – Raises water pH to 8.5–9.5, adds beneficial minerals, and oxygenates the water for enhanced taste and health benefits.
  • Low Waste Ratio (1:1) – Efficient water usage with exclusive membrane flushing technology.
  • High Output – Equipped with a Dow Filmtec 300 L/day TFC membrane, capable of producing up to 450 L/day at higher pressures.
  • Compact Under-Sink Installation – Fits neatly under your sink with a dedicated faucet for easy access.
  • Pressure Limiting Valve Included – Ensures system safety and longevity.
  • NSF Certified Components – Meets Australian Standards for safety and performance.

5-Stage Filtration Process

  • Stage 1: Sediment Filter – Removes dirt, sand, and other particulates.
  • Stage 2: Carbon Block Filter – Reduces chlorine, chemicals, and odours.
  • Stage 3: Dow Filmtec TFC Membrane – Eliminates up to 98% of contaminants, including fluoride, heavy metals, viruses, and bacteria.
  • Stage 4: Post Carbon Filter – Enhances taste and removes residual impurities.
  • Stage 5: Hi Alkalizer Re-Mineraliser – Adds essential minerals and increases pH for alkaline water.

Hi Alkalizer Re-Mineraliser Details

This unique final stage of the system restores the healthy properties often removed by the reverse osmosis process. The refillable alkaline cartridge is filled with a proprietary blend of mineral media that:

  • Increases pH to between 8.5 and 9.5, depending on source water quality and pressure.
  • Adds back healthy minerals like calcium, magnesium, and potassium – naturally found in spring water.
  • Oxygenates the water by micro-clustering and energising it, giving it a smoother mouthfeel and better absorption.
  • Improves taste by neutralising any residual acidity and giving the water a “silky” feel.
  • Helps to re-balance electrolytes, which may benefit hydration and support general wellness.

Unlike sealed inline cartridges, this one is fully refillable, making it cost-effective and eco-friendly. Refills are available and recommended every 24 months.

The alkaliser is rated to treat up to 10,000 litres of filtered water before a refill is required. A flow restrictor is installed to ensure optimal contact time and maximum mineral absorption.

System Specifications

  • Membrane Capacity – 300 L/day at 50 psi (350 kPa); up to 450 L/day at higher pressures.
  • Waste Ratio – 1:1 (efficient water usage).
  • pH Output – 8.5 to 9.5 with Hi Alkalizer.
  • Installation – Under-sink with dedicated faucet; includes pressure limiting valve.
  • Components – NSF certified, compliant with Australian Standards.

Replacement Cartridges & Maintenance

  • Annual Cartridge Pack (ROCDU-02) – Click here to order.
  • Reverse Osmosis Membrane (Every 4 years)Click here to order.
  • Re-Mineraliser / Alkaliser Cartridge (Every 2 years)Click here to order 

Additional Information

Cartridge replacement tutorial

Warranty

The PSI-021-5RM-HA system comes with a 5-year warranty, covering defects in materials and workmanship under normal use. Built with top-quality components, this system ensures durability and reliable performance.

Customer Reviews

Based on 2 reviews
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R
R.W.
Top quality unit

Top quality system. I like the configuration of the re-mineraliser cartridge. Clear instruction manual provided and video on website. Everything arrived quickly and well packaged including the optional extra filters and mixer tap upgrade. Happy return customer.

Y
Yehoshua .
Very happy

This filter is far superior to my 25 year old RO
model. The speed of storage tank replenishment is amazing. Also, the low wastage rate is very pleasing.