First, the size: toothbrushes are generally divided into three types, infants, children and adults. The toothbrush full length, matte surface length, matte surface width, bristle height, monofilament diameter, and number of hair bundle rows were measured separately.
Second, the appearance quality of the toothbrush: including the top of the bristles should be rounded, the bristles should be smooth and uniform, the handle of the brush is good, the handle has a non-slip veneer and fulcrum, the packaging is qualified, and there is a trademark logo.
Third, the inspection method
Can use 0-150mm electronic digital calipers to measure related items, 20 samples are required, and the average value is taken. Using the bristles fixed extraction method, using a stereo microscope and camera display system, observe the shape of the end of the bristles by 40 times, and detect 20 support.
Fourth, evaluation of results
All specifications of the toothbrush should meet the standards in the table below (except for special-shaped toothbrushes and electric toothbrushes), and the pass rate of rounding of the ends of the bristles should not be less than 70%.