MSR Waterworks PES Membrane Cartridge
The PES Element is the membrane filter for all MSR WaterWorks and WaterWorks II water filters. This secondary element adds a higher level of filtration to the ceramic element making the WaterWorks II the finest available in water filtration.
- Second stage filter provides double protection
- Added filtration at .2 micron
Prop 65 O (Styrene): This product can expose you to styrene, which is known to the State of California to cause cancer.