300K Solutions


Fluorescent particles with single or multiple fluorophores are available in various sizes, emission spectra and combinations. Many are suitable for uses in flow cytometry, fluorescence microscopy, phagocytosis studies and cell labeling. Please contact us for fluorescent particle recommendations.


The SPHERO Fluorescent Microparticles are prepared by either staining the polystyrene core of the particles with a solution of appropriate fluorophore or by polymerizing a fluorophore in styrene in the presence of polystyrene core particles. As a result, a wide variety of fluorescent particles can be prepared ranging in size, type of fluorophore, fluorescence intensity and surface functional groups. Most of the fluorophores chosen for use in the preparation of SPHERO Fluorescent Particles are water insoluble and therefore are very stable. These fluorophores, once incorporated into the particles, do not leach and their color and fluorescence remains stable for long periods of time under proper storage conditions.



SPHERO Fluorescent Polymethylmethacrylate (PMMA) Particles

Catalog No.DescriptionConcentrationNominal SizePackage Size
FPMA-0256-2Fluorescent PMMA Particles, Nile Red0.2% w/v0.1-0.3 µm2 mL
FPMA-0261-2Fluorescent PMMA Particles, Yellow, Purple, & Sky Blue0.2% w/v0.1-0.3 µm2 mL
FPMA-40052-5Fluorescent PMMA Particles, Yellow1.0% w/v38.0-44.0 µm5 mL
FPMA-40056-5Fluorescent PMMA Particles, Nile Red1.0% w/v38.0-44.0 µm5 mL
FPMA-40062-5Fluorescent PMMA Particles, Purple1.0% w/v38.0-44.0 µm5 mL
FPMA-50056-5Fluorescent PMMA Particles, Nile Red1.0% w/v45.0-52.0 µm5 mL
FPMA-60062-5Fluorescent PMMA Particles, Purple1.0% w/v53.0-62.0 µm5 mL