Sunflair Water Pasteurization Indicator (WAPI) Indicates when Water has reached Pasteurization Temperatures; NOT A WATER PURIFIER Perfect for Camping, Hiking, Backpacking Essential for Emergencies Reusable Made in the USA Pasteurize Water &amp; Other Liquids Perfect for Camping, Hiking, Backpacking, Hunting, Fishing, Boating, Camping Bug-Out Bag Essential for an Emergency Kit Reusable