Abstract: The present invention provides a pre-treatment apparatus for an analytical metal sample, the apparatus including (1) a treatment chamber having a sample charging port which can be opened and closed and provided at the top of the chamber, a sample discharging port which can be opened and closed and provided at the bottom of the chamber, and a gas inlet and gas outlet, (2) a sample carrying bar joined to a sample holder also used as a sputtering electrode, and provided to pass through at least one side wall of the treatment chamber so as to be substantially horizontally movable and axially rotatable, and (3) a sputtering counter electrode at least having portions arranged opposite to each other in a region not inhibiting the charge and discharge of an analytical metal sample so that the sample holder can be arranged in the counter electrode.

Abstract: A sampler for drawing a sample of molten metal for analysis for hydrogen, the sampler has a tubular body of inorganic refractory material having low thermal conductivity and being substantially impermeable to hydrogen, and a readily meltable portion at one end and a hydrogen collection chamber at the other end. An inner tube is completely enclosed within the tubular body and is of a hydrogen permeable material and has a cylindrical space therewithin and defines with the inner surface of the tubular body an annular space between the inner tube and the body. It has apertures communicating the spaces. One of the spaces is open at the end corresponding to the readily meltable portion for receiving molten metal thereinto when the meltable portion is melted when the one end of the sampler is inserted into a bath of molten metal. The end of the one space which is toward the other end of the tubular body from the hydrogen collection chamber is sealed.