Abstract: A closure for a container, e.g., a container for holding reagents for an automated analyzer. The closure comprises a cap having an opening, the opening capable of communicating with the mouth of a container. The invention also provides an assembly comprising the closure of this invention and a container. The invention also provides a method for preparing the closure.

Abstract: The present invention relates to a cap for consuming a liquid from a container comprising at least one hole for the exit of liquid from the container and at least one hole for the entrance of air into the container, said air inlet incorporating a check valve allowing the entrance of air but not the exit of liquid therethrough, said valve being built into the body of the cap.

Abstract: A removable batch-type diluent tank for use in connecting to a rigid gas coupling in a beverage dispenser has a tank body for containing a supply of diluent having an opening and a removable cover for covering and sealing the opening. Also included is a relief valve for relieving pressure in the tank prior to removal of the cover. A quick disconnect coupling is rigidly connected to the tank and adapted for sliding connection with the rigid coupling of the dispenser, permitting the tank to be slid into the dispenser for connecting a source of pressurizing gas to the tank. Also included is a connection for conducting diluent from the tank.