Balsa system for tobacco pipe is filtering system using the natural attributes of balsa wood it allows the absorption of both moisture and impurities from smoke, without the addition of chemical elements, insuring a clean pipe shank, this absorption ability is due to the extremely porous fibers of the balsa , which allows for a perfect smoke without altering the flavor and aroma of the tobacco.
It is advisable to replace it every two/ three smokes, or every time you clean the pipe .
It is also recommended not to let the pipe sit longer than one day with a used filter inserted.
Research Center (USA) :
“..the filter has the ability to absorb 77% of the nicotine and 91% of the tar contained in tobacco without altering the flavor of same”.