White Paper: Ultrafine Grinding with Laboratory Ball Mills

Tipps & tricks for size reduction of solid samples down to the nanometer range

How are nano particles produced? The “Bottom-Up” method synthesizes particles from atoms or molecules. The “Top-Down” method involves reducing the size of larger particles to nanoscale, for example with laboratory mills. Due to their significantly enlarged surface in relation to the volume, small particles are drawn to each other by their electrostatic charges. Nano particles are produced by colloidal grinding which involves dispersion of the particles in liquid to neutralize the surface charges. Both water and alcohol can be used as dispersion medium, depending on the sample material. Factors such as energy input and size reduction principle make ball mills the best choice for the production of nanoparticles.

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Haan, Germany

Retsch GmbH

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Ball mills

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ball bearing mill

Emax | <80 nm

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