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Paramagnetic microspheres have the ability to increase in magnetization with an applied magnetic field and loose their magnetism when the field is removed. No residual magnetization is observed and that provides the end use very practical advantages, including ease of separation and suitability for automation.

Cospheric's highly spherical paramagnetic black polyethylene microspheres offer the flow of standard microspheres, with the ability to be separated from other materials for reuse and cleanup. These highly opaque microspheres are homogeneous polyethylene and are often used in microscopy for high contrast cross sections.


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Black Paramagnetic Polyethylene Microspheres 10um to 1mm in Diameter. Paramagnetic microspheres have the ability to increase their magnetization with an applied magnetic field and decrease their magnetism when the field is removed.
Item #: BKPMS -
Price: $103.95-$372.75
Item #: BKPMS - View

Paramagnetic microspheres have the ability to increase their magnetization with an applied magnetic field and decrease their magnetism when the field is removed. No residual magnetization is... [more info...]

Janus Particles - Black Paramagnetic Microsphere Core with Partial White Coating (Bipolar and Bichromal Particles)
Item #: HCMS-Polymer -
Price: $295.00-$495.00
Item #: HCMS-Polymer - View

Janus particles are microspheres with dual-functionality. We specialize in creating hemispherical coatings on microspheres of any material with diameters greater than 45micron. Custom colors, cores,... [more info...]