PP sediment 5µ
Stage 1 — protects everything after it from sand and rust.
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
The first stage under your kitchen sink. It stops sand and rust at 5 microns to protect everything behind it — above all the RO membrane, the most expensive part of the system. Neglect it and you replace the membrane early.
How you know it is overdue
- The storage tank refills more slowly than it used to
- A slow trickle from the filtered-water tap
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
- GAC carbonEvery 4–6 months
- CTO carbon blockEvery 4–6 months
- RO membraneEvery 4–6 months
- Post-carbon polishEvery 4–6 months
- Alkaline cartridgeEvery 24 months
- Mineral cartridgeEvery 24 months