Platypus GravityWorks 2L Water Filter Kit
Coming in at just 11 ½ ounces, the GravityWorks is extremely lightweight. Weight-conscious hunters could even leave out the included soft-sided clean-water reservoir and a few accessories to reduce the overall weight even further. The system consists of primary reservoir for dirty water, a ceramic filter, and a length of tubing with included fittings for both Nalgene-style bottles, conventional water bottles, and even bottles and bladders fitted with push-pull caps. Though I never tried, Platypus also says you can fill bladders through their sip-tubes, which eliminates the hassle of removing the bladder from your hunting pack. The GravityWorks filter couldn't be simpler to use: Just fill the dirty reservoir with unfiltered water, plug in the filter via the quick-connect valve, screw a bottle onto the cap adapter, and open the pinch clip to start the flow of water. When clean, the filter will fill a quart bottle in about a minute. The first quart through the filter had a slight chemical taste, but subsequent water tasted clean.