Air bubbles in the fluid path can compromise the dispense process as they result in gaps or unsatisfactory dispensing. When replacing a syringe, it is common for a small amount of air to be trapped between the tip of the syringe and the luer adapter. GPD Global’s PCD3H, PCD3L, PCD4H, and PCD4L have a unique fluid feeding feature that allows any air pockets in the pathway to be easily purged before they enter the main fluid reservoir. This design ensures a consistent dispense process regardless of the number of syringe changes: