Luer Taper

The Luer taper is a standardized system of small-scale fluid fittings used for making leak-free connections between a male-taper fitting and its mating female part on medical and laboratory instruments, including hypodermic syringe tips and needles or stopcocks and needles. Named after the 19th-century German medical instrument maker Hermann Wülfing Luer, it originated as a 6% taper fitting for glass bottle stoppers. Key features of Luer taper connectors are defined in the ISO 594 standards. It is also defined in the DIN and EN standard 1707:1996 and 20594-1:1993.