No boiling – No waiting – No chemicals used! This is one of the most economical solutions for ridding your drinking water of giardia and cryptosporidium if you’re not a fan of water purification tablets or drops, which require waiting until it is safe to drink. The Eagle filter is for outdoor enthusiasts who enjoy a drink of cold fresh water without a wait or a chemical taste. No chemicals used. Filters particles and micro- organisms down to a nominal 2 micron level. It is virtually unbreakable! Timberline Ultralight Water Filter provides protection against giardia, cryptosporidium and other organisms of equal size or larger such as ameba, tapeworm eggs, etc. In areas where beaver or muskrat are prevalent, giardia is probably the most common hazard in drinking water. Outbreaks of giardiasis have occurred throughout the United States and it is a potential problem for most outdoor people. The Timberline water Filter is the most versatile and rugged system for providing giardia-free fresh water to outdoor people in pristine areas. This ultralight water filter can be used with its pump or used like a straw. Removes giardia and amoeba by filtration. No chemicals used. Does not affect taste. Weighs less than 6 oz.