Abstract: A precision fluid measuring apparatus is provided which is simple to operate and manufacture, but which permits precise measurement of fluid quantities in a closed system. A flow passageway is defined by a conduit having three sets of apertures wherein the first set of apertures is located at one end of the conduit and the other two sets of apertures are located at the other end of the conduit. A blocking member is positioned in the flow passageway of the conduit and between the second and third sets of apertures. An envelope is provided which surrounds the three sets of apertures and which is slidable along the conduit between an upstream and a downstream position. Collars are provided which seal the first set of apertures and the second set of apertures when the envelope is in the downstream position. The collars provide a hermetic seal between the envelope and the conduit.

Abstract: A drip-proof probe characterized by a telescopic stinger adapted to be connected with a closed system, inserted into a shipping container for toxic fluid for sequentially extracting the fluid from the container and delivering the fluid to the closed system, and thereafter employed for rinsing residue from the container, all without subjecting handlers to contamination through spillage or inhalation.

Abstract: A method and a probe adapted to be inserted into a socket valve for an hermetically sealed container having confined therein a body of toxic fluid. The probe is characterized by a cylindrical configuration adapted to be telescopically inserted into a tubular sleeve of a socket valve and supported thereby for rotation relative thereto for thus opening and closing the valve, a container vent for introducing atmospheric pressure into the container as toxic fluid is extracted therefrom, and for washing residue from the internal surfaces of the container subsequent to extraction of the toxic fluid from the container.