DIYbanter - Usual water filter

For the moment, water filters in the market mainly include the
following categories:
Micro filtration filter:
Such as granule activated carton filter, PP cotton filter, ceramic
filter, KDF filter, quartz filter etc. The precision of those filters
is over 0.1 micron, which can't exclude the pollutants in the water
effectively enough. The granule activated carbon filter only can
eliminate the peculiar smell and chlorine, but it also can't
eliminate all the poisonous chemical substances and other pollutants in
the water. The Micro filtration filter usually can't attain the
standard of directly drinking water.
Super filtration filter:
Includes the single super-filtration film filter and the filter
compound with super-filtration film and other medium (such as activated
carbon, KDF). The precision of the super-filtration film filter is
about 0.01 micron, can effectively exclude the silt, rust, resin,
bacteria etc harmful substances, synchronously, keep the profitable
mineral microelements. If only adopt the single super-filtration film
filter, which can't effectively exclude the peculiar color and smell,
chlorine and heavy metal ion, it should be mixed with other medium,
such as activated carbon, KDF etc filtration material, the effect will
be better.
Reverse osmosis pure water machine:
Reverse osmosis device could remove the necessary mineral substance
(calcium and magnesium) and other substances in the water, and produce
highly softened water that is not beneficial for health.
Mineralizing, magnetizing, activating and energy water filter:
Usually speculate the notion, lack real virtual purge function. Even if
they were claimed that they have the function of purge. They usually
used the filter material of micro-filter gradation, as active carbon,
ceramics filter etc., but which can't effectively remove the harmful
pollution in the water.
The main problem of drinking water is chlorine, organic compounds,
THM's and heavy metal. Wherefore, the optimal filter is the device
which can effectively decrease these main pollution and reserve the
beneficial substance for health as Calcium, magnesium etc.

Tourmaline materials and water filters Supplier
http://www.root-cn.com/Tourmaline-Ceramic-Series.htm