Both Iou-Sen & Bin-Cho-Tan can deodorize and filter
out impurities in the water such as nitrate, nitrite,
chlorine, bacteria, etc. Bin-Cho-Tan can also release
healthful mineral and Iou-Sen can stabilize the pH of
the water between 7.2 and 7.4.
(Click
here
for details)
(Click here
for Stone & Charcoal refill)