1 Pre-filtration 
A fleece retains coarse particles. Further, its water distribution system ensures optimum use of the downstream filter medium.

2 Carbonate hardness reduction
Filter medium reduces carbonate hardness to prevent limescale formation.

3 Permanent hardness reduction (PURITY Clean Extra only)
This stage eliminates permanent hardness and non-hardness causing minerals.

4 Anion reduction (PURITY Clean Extra only)
This filter medium reduces remaining ions.

5 Fine filtration
Finally, a fleece retains remaining fine particles.

IntelliBypass technology
The unique IntelliBypass technology allows for a constant by-pass water rate irrespective of the volumetric flow. This ensures a consistently high water quality, particularly in case of low water throughput rate.