By lifting or pressing the lever on the tap body, cold water is diverted through to the filtration unit located under the sink. The housing of this unit contains the replaceable Fresh Water Pearl cartridge. The Pearl filter comprises three main components: an outer shell of micro-porous ceramic, a layer of ‘redox’ material and an inner core of impregnated carbon block. Each media is specially formulated to remove specific contaminants from the untreated water as it passes through the cartridge, from the outside to the centre.
Stage 1 - The ceramic outer shell: the unique properties of the porous ceramic section of the cartridge enable it to remove 99.9% of all particles larger than 1 micron (not visible to the human eye), including sediment, harmful bacteria, cysts and parasites.
Stage 2 - The ‘redox’ layer – KDF55: sandwiched between the outer and inner core this uniquely formulated media is an effective bactericide and reduces chlorine, iron, hydrogen sulphide and heavy metals. It also reduces limescale build-up on exposed surfaces. KDF55 is approved for use with potable water and meets the safety standards of both the USA EPA (environmental protection agency) and FDA (food and drug administration).
Stage 3 - The carbon block inner core: at the heart of the cartridge is a cylinder of activated carbon in the form of a porous block. This technically advanced construction is far superior to the commonly used, loose granular activated carbon. Its controlled pore structure (0.5 micron nominal) makes it particularly suited to use in domestic pressure filters. The carbon rod is effective against heavy metals including lead, and a wide range of chemical and organic pollutants including chlorine, agricultural pesticides, and herbicides.
After filtration the water continues through its own separate channel and is dispensed via a dedicated or three-way tap.