Get added viral protection in popular wilderness areas and developing countries with this combination purifier system. The SweetWater Microfilter removes waterborne bacteria and protozoan parasites and the chlorine-based SweetWater Purifier Solution effectively inactivates viruses. This system meets U.S. EPA requirements for microbiological water purifiers. Iodine-free. Inactivates viruses without bad-tasting iodine. Fast. Pump at a fast flow rate of 1.25 liters per minute then add five drops of the purifier solution per liter and wait five minutes for optimal protection. Easy to Use. Lever-action pump handle has a 4-to-1 mechanical advantage and dual pump action so you dont have to work as hard. Lightweight. Entire system weighs just 14 ounces. Compact. Handle folds flat when not in use for easy packing and storage. Dependable. Inactivates 99.99% of waterborne viruses; eliminates over 99.9999% of all waterborne bacteria and 99.9% of common protozoan parasites such as giardia and cryptosporidia as well as particulates bad tastes and odors. All-in-One. A Platypus 2+ Liter Bottle that connects directly to the microfilter is included for easy treatment with the purifier solution. Accessories Include: an 80 micron stainless-steel prefilter two color-coded silicone hoses foam float water bottle adapter cleaning brush and carry bag.