Appropriate Solar
600 F Street
Suite 3600
Arcata, CA 95521
United States
ph: 707-825-1266
fax: 707-825-8971
Water Pasteurization
The Pasteurization process was invented by Louis Pasteur in 1864. Large swaths of people living in developing nations do not have access to clean drinking water. One method of providing clean drinking water is a process called water pasteurization. Water pasteurization is a process of heating water to destroy germs, viruses and parasites that cause human disease. Water pasteurization occurs after heating water for 6 minutes above 65 deg C or 149 deg F.
If water is suspected of contamination, the common procedure is to boil the water. However, boiling water takes time and uses expensive/scarce fuel. Water pasteurizes at temperatures well below the boiling point of water. Time and fuel can be saved by pasteurization process.
The solar water pasteurization process utilizes solar cookers to concentrate the sun's heat energy to warm the water to the required temperatures. Water pasteurization can also be accomplished with a rocket stove. Rocket stoves can heat water quickly and are very fuel efficient. They able to heat water with just a few twigs or dry grass. It is important to note that pasteurization will not clean water that has been contaminated with chemicals or remove salt from brackish water.
Super Water Pasteurization Indicator
Features
- Indicates when water has reached pasteurization temperatures.
- Great for use with solar cookers or Rocket Stoves.
- Upgraded design with stainless steel cord and brass end caps that wont melt when used on hot fire.
The Water Pasteurization Indicator (WAPI) allows users to determine when liquid has been pasteurized. Pasteurization is the process of heating a fluid for a giving period of time, typically water or milk, to a temperature that kills disease causing organisms. A WAPI contains a special soy wax that melts when the liquid is heated enough to be pasteurized, providing the user with a visual indicator that the water has reached safe pasteurization temperatures 65 deg C (149 deg F) for the 4-6 minutes required. The Super WAPI is an upgraded version of the standard WAPI and incorporates a stainless steel cord and brass fittings.
Most people think its necessary to boil water to make it safe to drink. However, you can make safe drinking by using the pasteurization process. Using a WAPI saves time and fuel by eliminating the need to bring the liquid to a boil.
Safety Notice: Pasteurization does not remove dangerous chemicals. Pasteurization is not the same as sterilization, which is achieved at much higher temperatures.
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Appropriate Solar
600 F Street
Suite 3600
Arcata, CA 95521
United States
ph: 707-825-1266
fax: 707-825-8971