PURAS
The System

The System

under-sink reverse osmosis + remineralizer

$349

Three stainless housings and a remineralizing final stage. Reverse osmosis strips water down to nothing; the fourth stage is what makes it worth drinking again.

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Details

  • Sediment → carbon block → RO membrane → mineral remineralizing cartridge
  • The fourth stage is the point: RO alone produces flat, empty water
  • Brushed stainless housings, machined brass fittings, no plastic manifold
  • Installs to a standard cold line in about forty minutes
  • Membrane lasts two to three years; pre-filters six months

Reduces

  • Dissolved solids
  • Fluoride
  • Nitrates
  • Lead
  • PFAS / PFOA
  • Arsenic

Specification

Stages
4
Output
~2.8 L / hr
Membrane
0.0001 μm
Pre-filter life
~6 months
Membrane life
2–3 years
Fitting
3/8" standard cold