Glue head dropper, also known as glue cap dropper, it is used to absorb or drop a small amount of liquid reagent an instrument. The glue head dropper consists of a glue cap and a glass tube. There are several forms such as straight shape, straight shape with buffer ball and curved shape with buffer ball. The specification of the glue head dropper is expressed by the length of the tube, which is commonly used for 90 mm and 100 mm. Each drop of the glue head dropper is 0.05ml.