Back to results
US 2003/0224366 A1Published application
Magnetic glass particles, method for their preparation and uses thereof
OwnerKurt Weindel, Michael Riedling +1inventors
InventorsKurt Weindel, Michael Riedling, Albert Geiger
Life of this patent
Estimating the term…
Abstract
This invention relates to magnetic particles having a glass surface which are substantially spherical. This invention also relates to methods for making them, as well as to suspensions thereof and their uses for the purification of DNA or RNA in particular in automated processes.
Claims64
A composition of magnetic glass particles
- wherein
- the magnetic glass particles comprise at least one magnetic object with a mean diameter between 5 to 500 nm.
A method for the production of a composition of magnetic glass particles comprising the steps of
- a) suspending magnetic objects with a diameter between 5 and 500 nm in a sol,
- b) spray-drying the suspension in a two-nozzle spray-drier, and
- c) sintering the spray-dried powder.
A procedure for isolating a biological material comprising
- a) contacting a sample that contains the biological material in a liquid with a composition of magnetic glass particles wherein the magnetic glass particles comprise at least one magnetic object with a mean diameter between 5 to 500 nm under conditions in which the biological material binds directly to the surface of the magnetic glass particles, and
- b) separating the biological material from the liquid.
Dependencies are inferred from the claim text.