Cell for containing fluid to be analyzed by x-ray spectroscopy

Claim 1

A fluid cell for x-ray analysis comprising a cylinder having a first closed end defined by a wall and a second open end, a thin sheet of synthetic resinous material fitted over said open end and adapted to pass radiation through it into a quantity of fluid disposed in said cylinder, with said cylinder disposed so that said second end is facing down and said first end is up, wall-rupturing means formed in said closed end for rupturing said closed end to accommodate fluid flow from within said cylinder when said fluid heats and expands due to said radiation, said means being formed near to but inwardly of the periphery of said wall and comprising a vertical post which rises from a portion of said wall which defines said first closed end of said cylinder, at least a part of said portion of said wall being thinner than said wall and rupturable by means of pressure applied to said post to cause said post to tend to pivot, and an upstanding rim rising from said wall and defining the periphery of said closed end and being of sufficient height to contain fluid which may be present on said closed end after said means has been operated to rupture said wall.