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Thermo Scientific™ Fluoro-Max Dyed Blue Aqueous Fluorescent Particles

Achieve improved sensitivity and detectability in analytical methods with internally dyed microspheres that feature bright, high-contrast colors.

Manufacturer: thermo scientific™  B520B

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Catalog No. 09980499

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Description & Specifications


Additive Trace amounts of surfactant to inhibit agglomeration and promote stability
Color Blue
Composition Polystyrene
Contents Dyed polystyrene microspheres in water
Diameter (Metric) 0.52µm
Diameter (Metric) Mean 0.52µm
Diameter (Metric) Nominal 0.52µm
Dye Type Firefli Fluorescent Blue (365,388,412/ 445,445,473)
Includes Package Insert Sheet
Particle Density 1.05g/cm³
Particle Size (Metric) 0.52µm
Quantity 90mL
Refractive Index 1.59 at 589nm (25°C)
Stability Product stable for a minimum of 24 months
Storage Requirements Unless otherwise stated, refrigerate (2° to 8°C) product when not in use but do not freeze. Store upright and keep bottle tightly sealed. Mix product with gentle inversion by hand or vortex mixer. Product comes with stir bar for continual mixing duriong sampling.
Uniformity <3%

Achieve improved sensitivity and detectability in analytical methods with Thermo Scientific™ Fluoro-Max Blue Aqueous Fluorescent Particles, internally dyed microsphere suspensions that feature bright, high-contrast colors.

Fluoro-max fluorescent particles emit bright and distinct colors when illuminated by the light of shorter wavelengths than the emission wavelength. This improves their contrast and visibility relative to background materials. These internally dyed polymer particles utilize the exclusive Firefli™ process to incorporate the dye throughout the polymer matrix to produce bright fluorescent colors, minimize photo bleaching and prevent dye leaching into aqueous media.

  • Made of polystyrene (PS)
  • Density of 1.05 g/cm3 and a refractive index of 1.59 @ 589nm (25°C).
  • Packaged as 1% solids
  • Can be detected with an epifluorescence microscope, confocal microscope, fluorometer, fluorescence spectrophotometer or fluorescence activated cell sorter
  • Can also be detected using mineral light or black light (UV)

Spectral information is approximate and for reference only. The spectral properties of the dyes are dependent on their concentration and physical environment.The exact excitation and emission maxima may vary depending on the size and composition of the particles.

Recommended for:

  • Filter testing
  • Flow tracing
  • Biological research