Product Description * Semiautomatic, self-refilling syringe with a spring-loaded plunger that allows repetitive delivery of preset aliquots from a single reservoir. * The handle has been designed to render fatigue-free operation over an extended period of time. * A detachable three-way valve with corrosion-resistant springs and stainless steel valve balls ensures a repetitive accuracy of 1% (basic models do not have valve system). * Features an interchangeable ground-glass barrel with corrosion-resistant stainless steel plunger and Viton® washers. * All models can be autoclaved after cleaning. * To accommodate a wide range of filling operations, the Socorex® Self-Refilling Syringes come with a variety of useful accessories, including a blunt-end cannula with Luer lock, long and short chrome-plated intake/air vent cannula, a sinker, and silicone tubing.