Assertion: tourmaline | /r/HasProperty | boiled near 1000°c.in addition
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text: Int J. Biometeorol 1993 Sep; 37(3) 133-8).Around 1986, it was found in a research station in Japan that, even though tourmaline was broken down in smaller pieces, a positive and a negative electrode existed on both end of the crystal, and the electrodes never disappeared unless tourmaline was boiled near 1000°C.In addition, when the positive and the negative electrodes of a tourmaline crystal were connected to each other, it was proven to show low electricity of 0.06mA.Tourmaline, in your filter, is used to naturally transform water into mild alkaline water, reduce water clustering (what happens to our stored water) and has anti-bacterial and deodorant qualities.