The hollow-fiber membrane is One of the latest revolutionary development in water filter technology.
Since its founding, SAWYER’s water filter products have been incorporated and developed the water purification systems both for individual, household and commercial applications.
Hollow-fiber membranes are micro-thin tubules with porous walls. The tubules (fibers) are about 1mm thick. The pores that allow water to flow through the fibers are approx. 0.1 & 0.02 micrometer wide, which is about 600-800 times thinner than a human hair, too small for even the tiniest impurities to pass through.
In order to improve both the filtration rates and longevity of the filter, Sawyer developed a technology which makes the hollow fiber membrane is something even more precise and rugged. The fiber composition had to deliver exactly 0.1 & 0.02 micron filtration 100% of the time to ensure no bacteria would get through, and the membranes had to be sturdy enough to withstand backwashing which allows the filter to be cleaning and reused.
Sawyer’s Hollow Fiber Membrane filters are small, portable, easy-to-use, reliable, inexpensive, and can last more than a decade without needing to be replaced.
The proprietary water filters are comprised of tiny “U” shaped micro-tubes that allow water to enter into their core through tiny micro-pores. The high number of those tiny tubes and their surface area allows the filter to have one of the fastest flow rates in the world. This high flow rate eliminates the need to store water, reducing the possibility of water contamination after the filtration process.
Each filter is certified for ABSOLUTE microns; that means there is no pore size larger than 0.1 or 0.02 micron in size. This makes it impossible for harmful bacteria, protozoa, or cysts like E. coli, Giradia, Vibrio cholerae and Salmonella typhi (which cause Cholera and Typhoid) to pass through the Sawyer PointONE™ biological filter. At 7 log (99.99999%) the filter attains the highest level of filtration available today.
If viruses are an issue, we offer the Point ZeroTWO Purifier (0.02 micron absolute pores), the first and thus far only portable purification device to physically remove viruses, which it does at a >5.5 log (99.9997%) rate, exceeding EPA and NSF recommendations.
All Sawyer filters have been tested by independent and qualified research laboratories according to U.S. EPA standards for water filters, and meet or exceed EPA standards. Sawyer’s revolutionary technology has also been tested and verified by the United Nations, and is currently being used in more than 70 countries around the world.