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Solid glass, ceramic and polyethylene microspheres are hemispherically coated with fluorescent coatings. A fluorescent coating is precisely applied to half of the core sphere, making the glass, ceramic or polymer spheres appear colorful and fluorescent in daylight, and exhibit bright fluorescent response under UV light. Fluorescent coatings are available in seven standard colors, with three options for glass cores available for customers who require a fluorescent tracer of a specific emission spectra and density.
Fluorescent coatings can also be applied to other microsphere cores on special request, exact size range options vary by material. For PIV applications that typically use green lasers (530nm) as excitation sources, we recommend utilizing our fluorescent red coating in conjunction with a 570-580nm high pass filter so only the fluorescent particles will be visible during imaging.