Density Marker Beads

Materials of Microspheres

Density marker beads offer enable excellent stratification, and bright coloration for high visibility with the unaided eye. Density marker beads of accurately known mass density are generally used as an external marker to facilitate the monitoring of the density gradient shape and range. Historically density calibration beads in the size ranges of 212-250um or 250-300um are used.

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Neutrally Buoyant in Water – Microspheres with Specific Gravity of 1g/cc

Suspension of microspheres in water enables the visualization and characterization of fluid flow and testing the capability of devices to withstand particulate matter in the fluid stream, ensuring that microspheres do not settle and do not float on the surface. Most of these polymer microspheres are at least moderately opaque and clearly visible in water, clear or translucent…

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Microspheres in Medical Devices – MDDI Magazine

What are Microspheres?

High-quality polymer microspheres are commercially available in a
wide variety of colors and with controlled fluorescence, opacity,
specific gravity, particle size distribution, and electrostatic charge,
presenting endless possibilities for use in developing and testing
medical devices. To select the right microsphere for the job, one must
rely on detailed knowledge of the application and on the technical
judgment of…

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Density Marker Beads – Microspheres with Specific gravity of 1.065 and 1.075

In the biomedical industry researchers are sometimes looking for cells having targeted specific gravities. In order to locate these cells in test tubes it is useful to have colored marker beads which will show where the delineation between specific densities occurs. Two microsphere products having densities of 1.065 g/cc and 1.075 g/cc were recently released. These…

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Fluorochromes – Excitation and Emission Wavelengths Reference Table

Below is a useful reference table of various Fluorochromes that can be used in research requiring precise responses. For more information about Fluorescent Microspheres that utilize fluorochromes please refer to the related article titled “Fluorescent Microspheres – Properties and Applications.” The fluorochrome table is also available for download as a pdf. Table of Excitation and Emission Wavelengths FLUOROCHROME EXCITATION(nm)…

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Microspheres in Cosmetics – Solid Polymer Microspheres for Color Effects

A recent article on microspheres in Cosmetics & Toiletries magazine describes the use Solid Polyethylene Mirospheres for Effects in Color Cosmetics. Microspheres have been used in cosmetics for some time, primarily as fillers and exfoliators. Most recently scientists started to utilize light reflecting properties of microspheres for creating unique optical effects, such as optical blurring and wrinkle filling. Due…

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