Method for washing magnetic particles in a vessel with a bottom

Details Method for washing magnetic particles in a vessel with a bottom Method for washing magnetic particles in a vessel with a bottom

1992-04-22

1993-11-23

Morris, Theodore

Cleaning and liquid contact with solids

Processes

Including use of vacuum, suction, or inert atmosphere

134 24, 134166R, 134167R, 134168R, 134169R, 134167C, 134168C, 134172, B08B 304, B08B 504, B08B 904

Patent

active

052640426

ABSTRACT:
An apparatus for washing pellets of magnetic particles magnetically bound to the bottom of a test tube employs a liquid handling probe having an aspiration channel with a forked inlet for positioning the probe onto the periapical region of the test tube for optimizing both the aspiration and expression of liquids. While contacting the periapical region of the test tube, the forked inlet may aspirate liquid adjacent to the pellet without contacting the magnetic particles. Furthermore, the contact between the forked inlet and the periapical region of the test tube, serves to position the outlet of the liquid channel directly over the pellet for dislodging and resuspending the magnetically bound pellet with a forceful stream of wash liquid.

REFERENCES:
patent: 4554088 (1985-11-01), Whitehead et al.
patent: 4672040 (1987-06-01), Josephson
patent: 4695392 (1987-09-01), Whitehead et al.
patent: 4695393 (1987-09-01), Whitehead et al.

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