About The System
RO Purity. Servicing Made Simple.
The Pure Advanced delivers the same RO filtration performance as the Pure Plus+, up to 98% TDS rejection, fluoride reduction up to 98%, and calcium remineralisation to a balanced pH 7–8. The difference is in the servicing experience.
Traditional RO systems use large threaded housing units for each filter stage. Replacing cartridges means shutting off the supply valve, unscrewing each housing (often under a sink with limited access), catching the water that spills, swapping the cartridge, cleaning the housing, screwing it back on, and pressure-testing all connections. It's a job most homeowners defer, or call a plumber to handle.
The Pure Advanced eliminates all of that. Every cartridge uses a quarter-turn twist-fit mechanism. Turn off the tap, twist out the old cartridge, twist in the new one. No housing to open, no water to catch, no seals to worry about. The entire service, all five cartridges, takes under 15 minutes. It's the RO system for households who value self-sufficiency without complexity.
Filter Stage Breakdown
1
2-46-1 (ST-01)
1-Micron Sediment Quick-Change Cartridge
Pre-filter, Particles, silt, rust
A 1-micron melt-blown polypropylene sediment cartridge that removes sand, silt, rust and suspended solids, protecting the carbon pre-filters and RO membrane from clogging. Quick-change twist-fit, no tools, no housings to unscrew. Replaced every 6 months.
SedimentSiltRustQuick-change
2
4-55-GAC (ST-33)
Granular Activated Carbon (GAC) Pre-Filter
Pre-filter, Chlorine, organic chemicals
A loosely-packed granular activated carbon cartridge that allows high flow while taking the first hit at the chlorine and organic chemicals that would otherwise damage the RO membrane. Protects and extends the life of every stage after it. Replaced every 6 months.
ChlorineOrganic chemicalsHigh flowQuick-change
3
4-55-CTO (ST-CTO)
5-Micron Coconut Carbon Block (CTO)
Pre-filter, Chlorine, VOCs, Taste & Odour
A 5-micron coconut carbon block with a dense matrix for maximum surface area and contact time. This stage takes the biggest load of chemical reduction, chlorine, VOCs, taste and odour, right before the membrane. Replaced every 12 months.
ChlorineVOCsTaste & odourQuick-change
4
13-RO50 (ST-RO50)
50 GPD Filmtec RO Membrane
Primary filter, 0.0001 micron, up to 98% reduction
The engine room. The Filmtec thin-film composite membrane filters to 0.0001 micron, rejecting the vast majority of dissolved contaminants: fluoride (up to 98%), heavy metals, nitrates, PFAS, salts, bacteria and cysts. Long-life quick-change cartridge, replaced every 3–5 years depending on your water quality.
FluorideHeavy metalsPFASNitratesBacteria
5
4-55-ALK (ST-34ALK)
Carbon + Calcium Alkalising Finishing Stage
Post-filter, pH 7–8, calcium added
A dual finishing cartridge: the finest Japanese activated coconut carbon for a clean, pure taste, then calcite (calcium carbonate) media that lifts and buffers the final pH to a balanced 7–8 without adding hardness. Annual replacement, twist out, twist in.
CalciumAlkaline pHTaste polishQuick-change
