Abstract: This application describes a new, reusable device for temporarily convening the single opening of a bag into a sealable dispenser, consisting of a closing apparatus that is held shut by a latching mechanism. The closing apparatus has a nozzle that reduces the area through which the contents of the bag may be dispensed and provides an interface for a removable cap, which serves as a preservation measure for the contents of the bag. The nozzle also provides a barrier between the contents of the bag and the operator. Previously, bags were resealed through an interlocking feature of the bag, clamping, or by thermally bonding bags of fusible materials. The new device does not require any interlocking features of a bag or any specific material properties. Further, the new device is designed for repeated use, fitting a wide array of bags, contents, and applications.