The Luer Lock adapter allows easy transfer of contents between two syringes or two female Luer Lock accessories. Made from clear, inert polypropylene plastic, these syringe adapters allow for seamless liquid transfer without mess while providing a clear view of the transfer process. The thread connector can be applied to many fields such asbiochemical analysis, water analysis, cell culture, circumstance testing, inkjet printing and supply, thermal engineering, pressurecalibration, pressure measurement refrigeration, disinfection,teaching, scientific research experiments, etc.The syringe adapter can be widely usable, specially in someprecision scientific equipment in the low pressure gas liquid fluidsystem and many other general areas.