This standard describes requirements and test methods for the physical properties of manual toothbrushes in order to promote the safety of these products for their intended use. Also specified is a test method for determining the resistance of the tufted portion of manual toothbrushes to deflection. This standard is a modified adoption of ISO 20126:2012, Dentistry Manual toothbrushes General requirements and test methods and ISO 22254:2005, Dentistry Manual toothbrushes Resistance of tufted portion to deflection.