BOSS 031-DI-RM-RF — 6-Stage Reverse Osmosis System (99.99% Fluoride Removal)
A premium under-sink 6-stage RO with 99.99% fluoride removal and onboard monitoring. Built around a genuine DOW FilmTec 300 L/day membrane (faster fills, low ~1:1 waste ratio) plus a refillable DI stage and re-mineraliser for pristine, great-tasting water.
Key Features
- 6-stage purification — RO + DI + re-mineralising + final polish.
- Up to 99.99% fluoride removal — DI stage drives ultra-low TDS purity.
- Onboard monitoring equipment — tracks purity and indicates when DI resin is exhausted.
- Low waste (~1:1) — premium low-waste configuration with membrane flush valve.
- High output — FilmTec 300 L/day @ 50 psi, up to ~450 L/day at higher pressure.
- Auto shut-off — closes feed when the storage tank is full.
- Minimal energy consumption — economical to operate.
- Australian made — components sourced from the USA & UK.
- NSF components — certified to NSF/ANSI 42, 53, 58.
- Requires 240 V power for monitoring electronics.
Note: If you add a handheld TDS meter, readings will be elevated after the re-mineraliser (that’s expected because minerals are added back for taste/balance).
6-Stage Filtration Process
- Stage 1 — Polyspun sediment (1 µm) removes dirt, rust, and particulates.
- Stage 2 — Carbon pre-filter Omnipure OMB934-5M coconut carbon reduces chlorine and chemicals.
- Stage 3 — RO membrane Genuine DOW FilmTec 75 GPD (≈300 LPD) TFC membrane.
- Stage 4 — Post DI filter (refillable) drives ultra-low TDS & high-purity water.
- Stage 5 — BOSS re-mineraliser (refillable) balances pH and restores beneficial minerals.
- Stage 6 — Final carbon polish Omnipure CL10RO-T40 enhances taste & removes residual odours.
PFAS Reduction & Water Quality
Carbon → membrane → carbon is a proven sequence for broad contaminant reduction, including PFAS (e.g., PFOA). After the membrane + DI, minerals are very low and pH can be ~pH 6; the re-mineraliser lifts pH back above 7 for balanced taste.
System Specifications & Features
- Membrane capacity — ~300 L/day @ 50 psi (350 kPa); up to ~450 L/day at higher pressure.
- Waste ratio — ~1:1 (low waste), with exclusive membrane flushing valve.
- Operating pressure — minimum 40 psi (280 kPa); ideal ≈ 50 psi (350 kPa).
- Power — 240 V supply required for the monitoring equipment.
- Dimensions (main unit) — 42 cm (H) × 48 cm (W) × 14 cm (D).
- Housings — QMP-300-HP (USA), 10″; tested to Australian Standard AS3497.
- PLV — 550 kPa Pressure Limiting Valve included.
- Faucet — genuine QMP stainless steel (upgradeable to other designer styles).
- Build — minimal energy use, economical to run; readily available consumables.
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 available. Details/Instructions
- ½″ Tee Olive Fitting (Copper) — typical for older homes with separate taps. Details/Instructions
Storage Tank Options
- Available sizes — 4.2 L, 9 L, 12 L stainless steel (NSF certified).
- 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
- See tank details
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
- Trio replacement cartridge pack — covers Stages 1, 2 & 6.
- Refillable DI resin — replace when onboard monitor indicates exhaustion.
- Refillable re-mineraliser — replace media per taste/usage (typical 12–24 months).
- Membrane care: flush the membrane for ~15 minutes every 2–3 months; replace about every 4 years for best performance.
Handheld TDS meters will read higher after the re-mineraliser (by design).
Performance Data
The system demonstrates high contaminant reduction 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
- Remineraliser (Calcite) — DATA SHEET
Helpful Resources
- 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?
- Membrane treatment rates (PDF) — download
Additional Information
Cartridge replacement tutorial
Important Suitability Note
Western Australia: This system is not recommended due to hard water and lower typical mains pressure (higher maintenance). Consider the PSI-021-6EX instead — it still achieves ~98–99% reduction of contaminants (including fluoride) with lower upkeep.
Warranty
5-year warranty covering defects in materials and workmanship under normal household use. Built with high-grade, internationally sourced components for durability and performance — see warranty page for full terms.