However, Many Do Not Notice. # There Are

However, many do not notice. # There are two types of filters for a shower: coal filters and # KDF-FILTERS. The coal filter costs $30 and above and it suffices # for some weeks, the KDF-FILTER costs as much, approximately # it is so effective and it suffices on half a year and more. # the third type - the filter in which at first costs Is preferable # the KDF-ELEMENT, and then also the coal filter (a coal element # in it it is not hammered, therefore as the basic filtration # it is carried out by the KDF-ELEMENT). 4.III.3. Air. In case air is considerably polluted, for it is useful # to clear it. For this purpose it is possible to use commercial # installation with the coal filter, and it is possible to construct from # the fan and - possibly automobile air filter? 4.IV. Problems of tooth seals, etc. 4.IV.1. Tooth seals - the general situation. # Tooth seals, as a rule, make of an amalgam # silver. It is an alloy containing in basic silver and the mercury. # It possesses unique (till rather recent time; # special plastic) are now applied by a set also # the properties doing it extremely convenient for seals.