Post-carbon polish
Stage 5 — polishes the taste right before the tap.
Cartridge prices are quoted on request — they move with each shipment, and we will not publish a number that is stale within weeks. We confirm it before any commitment, or it sits inside the annual service contract at a fixed price.
What this stage does
A final carbon polish after the tank, immediately before the tap. Water sits in the storage tank for hours and can pick up a taste from the tank or the tubing — this stage catches that at the last moment before it reaches your glass.
How you know it is overdue
- A faint taste or smell even though the TDS reading is still good
- The first glass in the morning tastes different from the rest of the day
Why a range and not one number?
Because what uses a cartridge up is the volume of water passing through it and what that water carries — not the calendar. A household of six gets through one faster than a household of two, and a tank collecting more sand shortens it further. We write the reading down at every visit, so by the second or third we know your home's actual rhythm instead of guessing.
Fits these systems
If your system is on this list, this is the right cartridge.
The rest of the set — RO kitchen filter cartridges
- PP sediment 5µEvery 4–6 months
- GAC carbonEvery 4–6 months
- CTO carbon blockEvery 4–6 months
- RO membraneEvery 4–6 months
- Alkaline cartridgeEvery 24 months
- Mineral cartridgeEvery 24 months