Abstract: An apparatus for testing whether the strength of a stray magnetic field emanating from an air freight consignment exceeds a predetermined threshold value has a magnetic field sensor, as a Hall probe, further an optical and/or acoustical alarm device, an electronic circuit coupling the sensor to the alarm device and actuating the alarm device(s) to produce a pre-warning signal, when the strength of the magnetic field sensed exceeds half the threshold value, and a warning signal when the strength of the magnetic field sensed by the sensor exceeds the predetermined threshold value, a nonmagnetic distance determining device, which, when brought in contact with a point on the surface of the consignment establishes a predetermined distance between the contacted surface point and the sensor; and means for self-testing the function of the apparatus.

Abstract: To provide reliable holding of a closure tampon for incontinent natural anus or an artificial anus after colostomy, an elongated essentially cylindrical body of cellular material, for example similar to a catamenial tampon, is provided with non-homogeneous sections, taken in longitudinal direction, and having differential diametrical compressibility, so that a section of low compressibility can be inserted in the exit opening for internal expansion to thereby hold its position in the artificial anus, the section of high compressibility permitting constriction to provide, after insertion of the low-compressibility section first, a plug effect.

Abstract: An implantate comprising an essentially annular permanent magnet which is axially magnetized is located in the vicinity of an orifice from an intestine, surrounding the intestine. A plug element having a core of magnetic material and an outer casing is inserted into the intestinal orifice. The casing is essentially cylindrical and is made of a material which is radially compressible, and inserted in the orifice, the magnetic material within the core thereof -- which is preferably removable -- in cooperation with the magnetic field from the permanent magnet locating the plug element within the orifice to establish an axial equilibrium position and hold the plug element in position closing the orifice.