Filters may be installed in-line near the point-of-use (e.g. between the waterline and the dental instrument) to block the passage of microorganisms. Filters will have no effect on the development of biofilm in the waterlines, but will remove microorganisms as the water is delivered to the patient.
Bristled definition, one of the short, stiff, coarse hairs of certain animals, especially hogs, used extensively in making brushes. See more.
Definition of rub. 1  1a : an unevenness of surface (as of the ground in lawn bowling)b : obstruction, difficulty the rub is that so few of the scholars have any sense of this truth themselves â Benjamin Farringtonc : something grating to the feelings (such as a gibe or harsh criticism)d : something that mars serenity.