These fixed volume, pipette-type dispensers are designed to deliver measured volumes quickly with reproducibility. To fill, tilt backward so head is vertical. When assembly is returned to an upright position, excess liquid in the head flows into the flask. Tilting forward delivers the measured volume. Complete assembly is supplied with joint clamp (LG-1004) and flask (LG-7750). Scientists rely on the expertise and artistic skills of Wilmad-LabGlass engineers and glass specialists to manufacture NMR and EPR consumables and laboratory glassware of the highest quality. Used daily in academia, healthcare and chemical, petroleum and other industrial applications, Wilmad offers 7000+ items as part of their standard catalog as well as custom fabrication for individual glassware, glass repair services and OEM glass parts.