Water Pasteurization Indicator (WAPI)

Disease-causing organisms in water and milk are killed by exposure to heat in a process known as pasteurization. Water heated to 65°C (149°F) for a short period of time is free from microbes, including E. coli, Rotaviruses, Giardia and the Hepatitis A virus. The reusable, durable WAPI is a simple device containing a special soy wax that helps users determine when water has reached pasteurization temperatures. The WAPI can be used for pasteurizing over most fuel sources including wood, charcoal and gas but it works particularly well in conjunction with a solar cooker. Great for camping and emergencies.