Historical
ISO 8627:1987
Dentistry -- Stiffness of the tufted area of tooth-brushes
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.
CONTENT PROVIDER
International Organization for Standardization [iso]
International Organization for Standardization [iso]