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Cospheric offers black paramagnetic microspheres in dry powder form, which has enabled scientists to leverage the benefits of paramagnetic particles in new applications. These highly spherical polyethylene microspheres offer the flowability and visibility of larger microspheres, with the ability to be separated from other materials for reuse and cleanup.
Other colors, sizes and grades of polyethylene spherical particles are available: Polyethylene Microspheres (Colors, Fluorescent, Phosphorescent, Barium Sulfate)
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 observed which provides practical advantages for end uses, including ease of separation and suitability for automation. When the magnetic field is removed, the microspheres demagnetize and redisperse easily.
No solvents are used in the manufacturing process. The micropsheres are highly opaque particles with maximum hiding power.
Polyethylene microspheres are hydrophobic and suspend easily in oil-based solutions. They can also be suspended in aqueous solution if coated with a surfactant prior to suspending in water. We recommend using Tween 80 or Tween 20 Surfactants.
Density: 1.2g/cc (tolerance +/-0.1g/cc)Particles in Size Range: > 90%
Spherical Particles: > 90%
Material Safety Data Sheet - Polyethylene Spheres, Beads, Microspheres, and Nanospheres
Accurate Model-Based Reconstruction Algorithm for Three-Dimensional Optoacoustic Tomography
Functional optoacoustic neuro-tomography for scalable whole-brain monitoring of calcium indicators
Influence of the absorber dimensions on wavefront shaping based on volumetric optoacoustic feedback
Multi-Spectral Optoacoustic Tomography: Methods and Applications
Portable spherical array probe for volumetric real-time optoacoustic imaging at centimeter-scale depths
Tomographic Particle Image Velocimetry using Smartphones and Colored Shadows
Cellulose Acetate Polymer Spheres - Large Plastic Beads ~1.3g/cc - 1mm to 12mm - All Colors
Clear Polyethylene Microspheres 0.96g/cc - 1um to 1700um (1.7mm)
White Polyethylene Microspheres - 10um to 1200um (1.2mm) - 1.00-1.45g/cc
Tween Biocompatible Surfactants - 2ml