Lorenzetti Aqua Bella Refill Catridge

The refill cartridge typically uses a 3‑stage filtration process: 

Pre‑filtering / Sediment Retention
The first layer is usually a polypropylene medium (“melt blown” type) that traps sediment such as clay, sand, rust, and larger particulates. 

Activated Carbon + Colloidal Silver
The second stage is activated carbon (often impregnated with colloidal silver), which removes chlorine, odors, undesirable tastes, and helps with microbiological control (slows bacterial growth). 

Fine Particle Filtration / Polishing Layer
The third stage further retains finer particles, polishing the water and ensuring clarity (removing smaller sediments or micro‑particulates) so the water is clear, odor‑free, and more pleasant.