Abstract: The temperature of gas stored within a gas emission sample container is maintained at a predetermined, constant temperature. In one embodiment, a heater is mounted in a receptacle formed on and adjacent to one of the side walls of the container. The heater is in the form of a planar arranged electric coil. A reflective surface is mounted in the receptacle next to one surface of the heater for reflecting heat from the heater toward the adjacent side wall of the container. The side wall of the container adjacent the heater is preferably of a black material for enhanced heat absorption. In another embodiment, at least one of the side walls of the container is formed of a black material for enhanced heat absorption. A heater is disposed in proximity with the container for generating heat which is absorbed by the black side wall of the container.

Abstract: A gas emission sample container has a fitting mounted in an aperture formed in one side wall of an expansible body. The fitting includes a sleeve with a through bore and an enlarged diameter end collar. A ring member is mountable over the sleeve in surrounding engagement with the collar and traps the edges of the side wall of the container surrounding the aperture in the container therebetween. A lock nut threadingly mounted over the sleeve removably fixes the ring member over the collar with the exterior end of the collar being disposed substantially flush with the end of the ring member and the major portion of the side wall of the container. A coupler nut is connected to the sleeve for connecting the interior of the container and the fitting to a gas flow conduit. A seal is mounted about the sleeve between the collar and the ring member to form a seal between the edges of the side wall of the container surrounding the aperture in the container and the fitting.