A notch is proved on a front face of an ink cartridge, and a holding portion is set between a corner portion of the recess portion and a projection portion provided on a cartridge upper face. The turbulent flow mechanism, preferably a cylindrical pin, induces turbulent flow to the fluid stream flowing through the passage. The end rings couple the substantially cylindrical body to the swellable wellbore packer section. The output data and the pseudo random outputs are input to XOR logic. In order to allow the vaporization of large sample volumes, the upstream end of the gas-chromatography column and the injection point of the sample into the vaporization chamber are both arranged adjacent to one of the longitudinal ends of the vaporization chamber and the feed connection for the carrier gas is located adjacent to the other end. A call is received from the endpoint, and the caller identifier is determined to be associated with the conference call identifier.