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Hario IOP-9SV Iousen Water Pot

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For all you purists out there, the Hario Iousen water filtration system is a fun and unique alternative to conventional water purification. Iouseki stones naturally mineralize water while Binchotan charcoal absorbs off-flavors and odors, leaving your water tasting fresh and mineralized. Add rocks and charcoal to the center cage and fill the pot with cold water. Allow it to sit for about 24 hours. Drink it as is, or find out how the unique mineralization changes the taste of your coffee or tea. Rocks and charcoal last up to 6 months.

Replacement ioseki stones and binchotan sticks are available as well, see our listing for more.


  • Unique method of water treatment
  • Adds minerals and absorbs off-flavors
  • Try it with your coffee and tea brewing water!
  • Capacity: 30 oz


    Originally known primarily as a company that produces glass products, Hario (also known as Hario Glass) has been working to produce high quality coffee and tea products since 1921. Over the past few years, Hario has become known as the coffee industry leader in pour over brewing equipment. Hario has helped bring about a coffee renaissance in the U.S. by creating ingeniously designed coffee brewing and grinding products that are being used by cafes and home coffee connoisseurs alike for by-the-cup coffee brewing. The design and methods behind Hario's brewing devices have helped to insure that specialty coffee is being brewed with the craft that it deserves.
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