PURPOSE: A fluorescent substance dispenser is provided to overcome the abrasion problem of a tappet and a nozzle which are abraded by fluorescent substances in a fluorescent liquid during a dispensing process. CONSTITUTION: A fluorescent substance dispenser comprises a nozzle (110) and a tappet (140). The nozzle includes a space for a fluorescent liquid. An opening (112) is exposed to the space and dispenses the fluorescent liquid. The tappet allows the nozzle to dispense the fluorescent liquid by linearly reciprocating toward the nozzle. The tappet comprises a cylinder part (144) and a hemispherical convex part (142). The hemispherical convex part (142) which is convex from the cylinder part toward the nozzle. The convex part is based on polycrystalline diamond.
