Standardization | Everything around the toothbrush
Standardization The German Standards Committee has also established a standard for toothbrushes. The hardness and flexibility of the bristles were measured and standardized using elaborate test procedures. Brush head and handles were also subjected to standardization. Brushes that comply with this standard can bear the DIN mark. However, this regulation is not binding; it is … Standardization | Everything around the toothbrush