Abstract: Apparatus for immersion in molten metal includes a disposable probe telescoped over an immersion end of a lance up to a shoulder on the lance. An elastic ring seal is provided between the shoulder and the adjacent end portion of the probe for protecting the joint between the probe and the shoulder.

Abstract: A sampling device for liquid metals contains a pipe (5) and a head (1) fixed on an end thereof, wherein a sampling chamber (11) is formed, which head (1) contains a part (2) of fireproof material which partially limits the sampling chamber (11), which is provided with a supply orifice (12,46) to the sampling chamber and which is put in the pipe (5) with a narrow end (3) in such a way that the sampling chamber (11) is located entirely outside of the pipe (5). The device also has at least one small cooling plate (9) forming at least a part of the well of the sampling chamber (11) and thus also limits the sampling chamber. The part (2) is made of a material that at least during the sampling offers a structure letting gas pass.