Hollow Fiber Membrane Technology

With the technology derived from kidney dialysis, we partnered with a fiber manufacturer to actually improve the hollow fiber membrane technology. In order to improve both the filtration rates and longevity of the filter, our team was dedicated to engineering something even more precise and rugged.To make it a superior solution, the fiber composition had to deliver exactly 0.1 & 0.02 micron filtration 100% of the time to ensure no bacteria would get through. Moreover, the membranes had to be sturdy enough to withstand backwashing which allows the filter to be cleaning and reused.

Our proprietary water filters are comprised of tiny “U” shaped micro-tubes that allow water to enter into their core through minuscule micro-pores. Contaminates get trapped in the tubes while the decontaminated water passes freely through. The high number of those tiny tubes and their significant surface area allow the filter to have one of the fastest flow rates available in the world. This high flow rate makes our filters easily utilized as point-of-use solutions, which has eliminated the need to store water – one of the leading causes of contaminated water throughout the world.

0.1 and 0.02 Microns

Each Sawyer 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, Giardia, 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). This is the first portable purification device to physically remove viruses. And it does it at a >5.5 log (99.9997%) rate, exceeding EPA and NSF recommendations.

Sawyer International

Sawyer water filters are being used by millions of people in over 80 developing countries for their daily clean water needs. Our simple to use, effective and easily transportable systems are the most commonly used portable filtration system in natural disasters, refugee camps, and by non-profits doing development work.