[en] Solid vapor-hydrogen-hydrogen target to be used at the beam of cold polarized neutrons, is described. Hydrogen is cooled using liquid helium from the intermediate vessel. It is possible to regulate temperature of the cooled volume and it allows to use targets and other gases as a substance. Design of the laboratory facility for hydrogen ortho-paraconversion operating in line with the target is presented. Facility allows to prepare vapor-hydrogen with ≤0.1% orthophase content at Fe(OH)₃ catalyst. Procedure of catalyst preparation is described