(a) Capturing of the magnetic beads.<br>
During this suction process,
when the magnetic field are applied to the separation region of piper tip, from outside of pipette tip, by the magnet arranged on the outside of the pipette tip,
as liquid containing magnetic beads passes through a separation region of the pipette tip,
the magnetic particles are attracted to and arrested to the inner wall of tile separation region of pipette tip.
Subsequently, when that solution are discharged under the conditions of has been kept the magnetic field,
magnetic particles only are left in the inside of pipette tip.
In this way magnetic particles are separated from liquid.
In accordance with Tajima,
the preferable suction height of the mixture liquid is such that
:the bottom level of the liquid is higher than the lower end of the separation region of the liquid passage  (That means bottom level of the liquid is higher than the lower end of the magnet.),
::when all the mixture liquid is drawn up,
::so as to ensure that the aspirated magnetic particles can be completely arrested.
At this time, because the magnetic particles are wet, they stay attached to the inner surface of the
separation region of the liquid passage of the pipette tip. If the pipette tip P is moved or
transported, the magnetic particles will not come off easily.
(b) Re-suspension of the captured magnetic beads.<br>
After the magnetic particles are arrested by above mentioned manner (a),
::so the mixture liquid removed of the magnetic particles is discharged into the liquid accommodating portion (Vessel) and drained out, with only the magnetic particles remaining in the pipette tip,
we can do the re-suspension process.
Re-suspension of the captured magnetic beads are in detail, consists of the following steps.
Of cause, we consider that, the state in which that magnetic material has been captured
by above mention way.
*Aspirate liquid such as washing buffer into the tip
*Quit the application of a magnetic field
::By "Quit the application of a magnetic field" the magnetic particles are suspended in the liquid.
*Discharging the liquid (such as washing buffer) from pipette tip to vessel (in the condition of magnetic force generated by the magnet body is cut off.).