This unit houses a custom designed cartridge which is by far the best on the market:

• First a washable sub-micron Porcelain Ceramic pre-filter prevents clogging of the cartridge and thereby extends its effective life.
• The ceramic pre filter also acts as an automatic shut off valve by slowing water flow to indicate that the ceramic needs cleaning without risking contamination of the cartridge or drinking water.
• Free silver ions (Ag+) have a toxic effect on micro-organisms even in relatively low concentrations. They have a highly fungicidal, bactericidal and algaecidel effect, therefore removing all harmful bacteria, parasites and viruses including Gardia Lambia Cysts, Cryptosporidium, E Coli, Fecal Coliforms, Hepatitus B and Salmonella.
• Stage three removes all heavy metals including lead, mercury, aluminum, iron, copper, zinc, magnesium and silver.
• Stage four is a solid carbon block, which is so compressed that it is the equivalent of over 300,000 square yards of filtering media.

Belkraft Universal Countertop (10"): $359.98 USD, $20.00 USD S&H Spare Doulton 4-Stage Ceramic Cartridge: $219.98 USD, $15.00 USD S&H