magnetic tool, method of collection of magnetic particles carried in fluid suspension and method of detection of parasites eggs in biological material

摘要

It is a magnetic tool (10) having a probe (12) made of a material that has very high permeability and a magnetic field source (14). The magnetic tool (10) has a body (18) supporting the probe (12) and the magnetic field source (14). the source (14) may be moved within the body 18 / cylinder (20). the probe (12) is in the form of a mu-metal needle formed with a sharp point at its tip (16) and having an opposite end (26) embedded or otherwise attached to the body (18). therefore, the tip (16) is at a fixed distance from the end of the body (18). The tool (10) is arranged to vary the magnetic coupling between the magnetic field source (14) and the probe (12) to a maximum when the source (14) contacts the end (26) of the probe (12). and a minimum when the source is moved in the opposite direction to the probe (16).