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Solar Pasteurization

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 [[Image:solar pasteur box.jpg|thumb|right|300px200px|Box Cooker. <br>Photo: Solar Cooker International]]

Pasteurization is the process of disinfecting water by heat or radiation, short of boiling. Typical water pasteurization achieves the same effect as boiling, but at a lower temperature (usually 65-75°C), over a longer period of time.

A thermometer or indicator is needed to tell when sufficient temperature is reached for pasteurization. Common devices for monitoring the water temperature use either beeswax, which melts at 62°C, or soya bean fat, which melts at 69°C. A simple device known as the Water Pasteurization Indicator (WAPI) has been developed at the University of California.

 

===Manuals, videos and links===

* [http://www.solarcleanwatersolution.com/ Solar Water Pasteurization]. Solar Solutions. 2010.

===Acknowledgements===* [http://wwwappropriatetechnology.googlewikispaces.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&ved=0CFMQFjAB&url=ftp%3A%2F%2Fftp.wpro.who.int%2Fscratch%2FENH%2FHWTS%2FWHO%2520Final%2FParticipant%2520Manual%2FAppendices%2FParticipant%2520Manual_Appendix%25202_HWTS%2520Fact%2520Sheets_2011-file/view/HWTS+Fact+Sheet_Simplified_Solar+Pasteurization_Jul+09-05%2F4_Disinfection%2FHWTS%2520Fact%2520Sheet_Solar%2520Pasteurization_2011-06.doc&ei=tkW1T9y3HfLXiALHx4mjBA&usg=AFQjCNHPXtJ2aj8ruMEzIMc0XxNLwdPLnQ&sig2=yivwN1sV477cklNzUGhFpQ pdf Household Water Treatment and Safe Storage Factsheet: Solar Pasteurization].] CAWST, 2009.

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