Specification of a test method and grading scheme for the stiffness of the tufted area of conventional manual tooth-brushes, together with the relevant information concerning definitions and those concerning testing machines. The original number of classifications of five categories has been reduced to three ones, i.e. soft, medium and hard. Eight definitions of important terms are given.
Status : WithdrawnPublication date : 1987-09
Edition : 1Number of pages : 4
Technical Committee:Oral care products