Thus we were impressed by the terra cotta water purifiers made in Brazil by Ceramica Stefani, seen at the Green Living Show. The terra cotta keeps the water cool; they are made by local artisans.
They are "Equipped with Dechlorinating and Sterilizing purifying elements based on the Doulton technology (with colloidal silver and activated charcoal made from coconut shells) eliminates water impurities, fungi, bacteria, micro-organisms, harmful chemicals and efficiently improves water taste". (more info below the fold) made by ::Ceramica Stefani and imported to Canada by ::Lifespices.com, starting at C$ 99.00, and in Australia at ::Stefani. I can't find any Stefani in the States other than Gwen, maybe she sells them. The Stefani Purification System
The water passes through the micro-porous ceramic element which removes 99% of suspended solids and more than 99% of parasites and cysts. This water is purified at a flow rate of up to ¼ gallon (1 liter) per hour per filter (ceramic element).
The dechlorinating and sterilizing ceramic element is internally coated with colloidal silver, to reduce fungus, bacteria and microorganisms., and makes water safer to drink or use in cooking.
The micro-pores of the ceramic filter wall remove solid impurities of up to 0.5 microns (2000 times smaller than a sand grain!) and the activated charcoal present inside the filtering element guarantees efficiency in eliminating harmful chemicals and unpleasant tastes and odors (usually caused by chemicals added to the water, such as heavy doses of chlorine), and generally improving water quality.
CERTIFIED FILTERING CAPABILITIES
Stefani water filters remove and reduce the following impurities and contaminants as tested by leading International Laboratories:
* 99.8% Bacteria
* 99.9% Amoeba
* 98.5% Chlorine
* 99.4% Iron
* 99.7% Copper
* 99.6% Lead
* 99.4% Zinc
* 94.5% Aluminum
* 87.0% Lindane
* 92.0% Dieldrine
* 93.0% Chloroform
* 95.0% Dichlorobromomethane
* 93.0% Dibromochloromethane
* 97.0% Bromoform
What is Terracotta and Why Use It?
Terra cotta is fired red porous clay with an unglazed surface used in sculpture and pottery.
Terra means earth. Some samples found along the River Nile are dated back close to 10,000 BC. It has been utilized by Egyptians, Chinese, Greeks, Japanese and ancient Romans.
Terra cotta has been used throughout history for sculpture and pottery, as well as bricks and roof shingles. In ancient times, the first clay sculptures were dried (baked) in the sun after being formed. Later, they were placed in the ashes of open hearths to harden, and finally kilns were used, similar to those used for pottery today.
However only after firing to a high temperature is it classified as a ceramic material. We use terra cotta in water filters because it’s well known for evaporating properties that keep water naturally fresh and cool – about 10 to 15.degrees Fahrenheit below ambient temperatures.
Fired terra cotta clay is the only material we know of that doesn’t change with time and resists corrosion and disintegration.