Abstract: A baffle for insertion into a container. The baffle includes a concave surface defined by two essentially parallel line segments connected to each other at their ends by line segments subtending an angle. The baffle further includes structure for mounting to a container so that the line segments are essentially parallel to and offset from a side wall of the container. Preferably, structure for mounting is structure for suspending the baffle from a first end wall of said container without attachment to a container side wall. The concave surface is preferably a curvilinear concave surface and the contiguous line segments subtending an angle are in the form of an arc. The baffle is preferably glass coated and sized to pass through an opening in an end wall of the container.