Fluoresbrite® Yellow Green Microspheres have excitation and emission spectra similar to FITC with excitation maxima of 441nm and emission maxima at 485nm. They are one of the brightest microspheres available at this wavelength and are used extensively in phagocytosis studies, flow cytometry and diagnostic assays.

Fluoresbrite® Yellow Green Microspheres have excitation and emission spectra similar to FITC with excitation maxima of 441nm and emission maxima at 485nm. They are one of the brightest microspheres available at this wavelength and are used extensively in phagocytosis studies, flow cytometry and diagnostic assays.

Kit contains 5ml of carboxylate polystyrene monodisperse microspheres (2.5% solids in water) for each of these nominal sizes: 0.5µm, 0.75µm, 1.0µm, 2.0µm and 3.0µm.

Polysciences offers multifluorescent microspheres in three sizes. Each microsphere is dyed with three different fluorescent dyes with excitation maxima of 377, 517 and 588nm, and emission maxima of 479, 546 and 612nm, respectively. These microspheres are packaged as 2.5% aqueous suspensions.

Use for applications including:

• Flow tests
• Filter tests
• Diagnostic tests
• Optical and electronic instrument testing and calibration
• Packaged as a 2.5% aqueous solution in a convenient dropper bottle.

Use for applications including:

• Flow tests
• Filter tests
• Diagnostic tests
• Optical and electronic instrument testing and calibration

Packaged as a 2.5% aqueous solution in a convenient dropper bottle.

Use for applications including:

• Flow tests
• Filter tests
• Diagnostic tests
• Optical and electronic instrument testing and calibration

Packaged as a 2.5% aqueous solution in a convenient dropper bottle.

Particles have a nominal diameter of 2µm and are packaged as 1.25% solids aqueous suspension.

Biotin covalently coupled to Fluoresbrite® YG fluorescent microspheres. Binding capacity available upon request.

Polysciences offers europium chelate microspheres in diamaters of 0.1µm, 0.2µm and 0.3µm to address the needs of individual assays, including immunochromatographic and microwell-based formats. Our europium products offer extremely bright fluorescence (excitation: 365nm; emission: 610nm) and exceptional stability, in addition to well-functionalized carboxylated surfaces for the covalent attachment of ligand.

Polysciences offers europium chelate microspheres in diamaters of 0.1µm, 0.2µm and 0.3µm to address the needs of individual assays, including immunochromatographic and microwell-based formats. Our europium products offer extremely bright fluorescence (excitation: 365nm; emission: 610nm) and exceptional stability, in addition to well-functionalized carboxylated surfaces for the covalent attachment of ligand.

Polysciences offers europium chelate microspheres in diamaters of 0.1µm, 0.2µm and 0.3µm to address the needs of individual assays, including immunochromatographic and microwell-based formats. Our europium products offer extremely bright fluorescence (excitation: 365nm; emission: 610nm) and exceptional stability, in addition to well-functionalized carboxylated surfaces for the covalent attachment of ligand.

Polysciences' streptavidin coated beads can be used in conjunction with a biotinylated ligand, antibody, DNA or RNA to form a bridge to the microsphere, providing the simple addition of a solid support. The streptavidin-biotin bond strength approaches that of a covalent bond, with an association constant (Ka 10^15 Mol-1) in an aqueous solution. This makes the bond not only essentially irreversible, but also supplies an interaction of high affinity and specificity.

Polysciences' streptavidin coated beads can be used in conjunction with a biotinylated ligand, antibody, DNA or RNA to form a bridge to the microsphere, providing the simple addition of a solid support. The streptavidin-biotin bond strength approaches that of a covalent bond, with an association constant (Ka 10^15 Mol-1) in an aqueous solution. This makes the bond not only essentially irreversible, but also supplies an interaction of high affinitiy and specificity.

Polysciences' streptavidin coated beads can be used in conjunction with a biotinylated ligand, antibody, DNA or RNA to form a bridge to the microsphere, providing the simple addition of a solid support. The streptavidin-biotin bond strength approaches that of a covalent bond, with an association constant (Ka 10^15 Mol-1) in an aqueous solution. This makes the bond not only essentially irreversible, but also supplies an interaction of high affinitiy and specificity. 1µm particles packaged as 1.25% solids in aqueous suspension.

Polysciences' streptavidin coated beads can be used in conjunction with a biotinylated ligand, antibody, DNA or RNA to form a bridge to the microsphere, providing the simple addition of a solid support. The streptavidin-biotin bond strength approaches that of a covalent bond, with an association constant (Ka 10^15 Mol-1) in an aqueous solution. This makes the bond not only essentially irreversible, but also supplies an interaction of high affinitiy and specificity.

Polysciences' streptavidin coated beads can be used in conjunction with a biotinylated ligand, antibody, DNA or RNA to form a bridge to the microsphere, providing the simple addition of a solid support. The streptavidin-biotin bond strength approaches that of a covalent bond, with an association constant (Ka 10^15 Mol-1) in an aqueous solution. This makes the bond not only essentially irreversible, but also supplies an interaction of high affinitiy and specificity.

The microsphere populations in the QuantumPlex™five-bead kits are encoded with different intensities of Starfire Red™, and microspheres in our ten-bead kits are distinguished by both fluorescence intensity and size. Starfire Red™ is a fluorescent dye with unique characteristics that make it ideal for multiplexing applications. The dye's broad excitation band allows it to be excited at a number of wavelengths, and it emits in the FL3 channel (685nm) with very little carry-over into FL1 or FL2, leaving othe detectors available for determination of positive binding events via common reporters such as FITC and PE.

The microsphere populations in the QuantumPlex™five-bead kits are encoded with different intensities of Starfire Red™, and microspheres in our ten-bead kits are distinguished by both fluorescence intensity and size. Starfire Red™ is a fluorescent dye with unique characteristics that make it ideal for multiplexing applications. The dye's broad excitation band allows it to be excited at a number of wavelengths, and it emits in the FL3 channel (685nm) with very little carry-over into FL1 or FL2, leaving othe detectors available for determination of positive binding events via common reporters such as FITC and PE.

The microsphere populations in the QuantumPlex™five-bead kits are encoded with different intensities of Starfire Red™, and microspheres in our ten-bead kits are distinguished by both fluorescence intensity and size. Starfire Red™ is a fluorescent dye with unique characteristics that make it ideal for multiplexing applications. The dye's broad excitation band allows it to be excited at a number of wavelengths, and it emits in the FL3 channel (685nm) with very little carry-over into FL1 or FL2, leaving othe detectors available for determination of positive binding events via common reporters such as FITC and PE.

The microsphere populations in the QuantumPlex™five-bead kits are encoded with different intensities of Starfire Red™, and microspheres in our ten-bead kits are distinguished by both fluorescence intensity and size. Starfire Red™ is a fluorescent dye with unique characteristics that make it ideal for multiplexing applications. The dye's broad excitation band allows it to be excited at a number of wavelengths, and it emits in the FL3 channel (685nm) with very little carry-over into FL1 or FL2, leaving othe detectors available for determination of positive binding events via common reporters such as FITC and PE.

The microsphere populations in the QuantumPlex™five-bead kits are encoded with different intensities of Starfire Red™, and microspheres in our ten-bead kits are distinguished by both fluorescence intensity and size. Starfire Red™ is a fluorescent dye with unique characteristics that make it ideal for multiplexing applications. The dye's broad excitation band allows it to be excited at a number of wavelengths, and it emits in the FL3 channel (685nm) with very little carry-over into FL1 or FL2, leaving othe detectors available for determination of positive binding events via common reporters such as FITC and PE.

The microsphere populations in the QuantumPlex™five-bead kits are encoded with different intensities of Starfire Red™, and microspheres in our ten-bead kits are distinguished by both fluorescence intensity and size. Starfire Red™ is a fluorescent dye with unique characteristics that make it ideal for multiplexing applications. The dye's broad excitation band allows it to be excited at a number of wavelengths, and it emits in the FL3 channel (685nm) with very little carry-over into FL1 or FL2, leaving othe detectors available for determination of positive binding events via common reporters such as FITC and PE.

The microsphere populations in the QuantumPlex™five-bead kits are encoded with different intensities of Starfire Red™, and microspheres in our ten-bead kits are distinguished by both fluorescence intensity and size. Starfire Red™ is a fluorescent dye with unique characteristics that make it ideal for multiplexing applications. The dye's broad excitation band allows it to be excited at a number of wavelengths, and it emits in the FL3 channel (685nm) with very little carry-over into FL1 or FL2, leaving othe detectors available for determination of positive binding events via common reporters such as FITC and PE.

The microsphere populations in the QuantumPlex™five-bead kits are encoded with different intensities of Starfire Red™, and microspheres in our ten-bead kits are distinguished by both fluorescence intensity and size. Starfire Red™ is a fluorescent dye with unique characteristics that make it ideal for multiplexing applications. The dye's broad excitation band allows it to be excited at a number of wavelengths, and it emits in the FL3 channel (685nm) with very little carry-over into FL1 or FL2, leaving othe detectors available for determination of positive binding events via common reporters such as FITC and PE.

Polybead® Microspheres are monodisperse polystyrene microspheres available in sizes from 50nm to 90μm. Diameters 4.5μm and larger are crosslinked with divinylbenzene (DVB). Our experienced chemists control the synthesis to provide precise monodisperse particle size distributions. These particles contain a slight anionic charge from sulfate ester.

Polybead® Microspheres are monodisperse polystyrene microspheres available in sizes from 50nm to 90μm. Our experienced chemists control the synthesis to provide precise monodisperse particle size distributions. These particles contain a slight anionic charge from sulfate ester.

Our dyed Polybeads® are packaged in an economical 2.5% aqueous suspension and are available in a variety of sizes and colors.

Fluoresbrite® Yellow Green Microspheres have excitation and emission spectra similar to FITC with excitation maxima of 441nm and emission maxima at 485nm. They are one of the brightest microspheres available at this wavelength and are used extensively in phagocytosis studies, flow cytometry and diagnostic assays.

Our dyed Polybeads® are packaged in an economical 2.5% aqueous suspension and are available in a variety of sizes and colors. These blue dyed microspheres may be coated using adsorption, as described in Technical Data Sheet 238E. They also have amine groups that may be used for covalent coupling procedures using glutaraldehyde. See Technical Data Sheet 238D.

Our dyed Polybeads® are packaged in an economical 2.5% aqueous suspension and are available in a variety of sizes and colors.

Polybead® Microspheres are monodisperse polystyrene microspheres available in sizes from 50nm to 90μm. Diameters 4.5μm and larger are crosslinked with divinylbenzene (DVB). Our experienced chemists control the synthesis to provide precise monodisperse particle size distributions. These particles contain a slight anionic charge from sulfate ester.

Fluoresbrite® Polychromatic Red Microspheres will fluoresce in different colors, depending on the light source and filters used. When viewed under a UV light source, the beads will appear as vivid orange. Microscopic viewing using a 475-490nm filter shows an extremely bright red fluorescence, while use of a 545-610nm filter yields a yellow fluorescence with excitation maxima of 491nm and 512nm and emission maxima at 554nm.

Our dyed Polybeads® are packaged in an economical 2.5% aqueous suspension and are available in a variety of sizes and colors.

Polybead® Carboxylate Microspheres are monodisperse polystyrene microspheres that contain surface carboxyl groups. This allows for the covalent binding of proteins to the bead surface. These microspheres are packaged as 2.5% solids (w/v) aqueous suspensions.

Polybead® Microspheres are monodisperse polystyrene microspheres available in sizes from 50nm to 90μm. Diameters 4.5μm and larger are crosslinked with divinylbenzene (DVB). Our experienced chemists control the synthesis to provide precise monodisperse particle size distributions. These particles contain a slight anionic charge from sulfate ester.

Polybead® Microspheres are monodisperse polystyrene microspheres available in sizes from 50nm to 90μm. Our experienced chemists control the synthesis to provide precise monodisperse particle size distributions. These particles contain a slight anionic charge from sulfate ester.

Polybead® Microspheres are monodisperse polystyrene microspheres available in sizes from 50nm to 90μm. Our experienced chemists control the synthesis to provide precise monodisperse particle size distributions. These particles contain a slight anionic charge from sulfate ester.

Our freeze-drying technique reduces the aggregation usually associated with dried beads. Dry material allows for the buffer of choice to be easily added.

Fluoresbrite® carboxylate microspheres are fluorescent monodispersed polystyrene microspheres that have carboxylate groups on their surfaces which can be activated for the covalent coupling of proteins. Polysciences’ Fluoresbrite® particles are used worldwide in phagocytosis and neural retrograde transport studies, and as markers for cell bound antigens.

Fluoresbrite® carboxylate microspheres are fluorescent monodispersed polystyrene microspheres that have carboxylate groups on their surfaces which can be activated for the covalent coupling of proteins. Polysciences’ Fluoresbrite® particles are used worldwide in phagocytosis and neural retrograde transport studies, and as markers for cell bound antigens. These microspheres are packaged as 2.5% aqueous suspensions. YO has limited water solubility, and some leaching may occur with rigorous washing.

Fluoresbrite® carboxylate microspheres are fluorescent monodispersed polystyrene microspheres that have carboxylate groups on their surfaces which can be activated for the covalent coupling of proteins. Polysciences’ Fluoresbrite® particles are used worldwide in phagocytosis and neural retrograde transport studies, and as markers for cell bound antigens. These microspheres are packaged as 2.5% aqueous suspensions. YO has limited water solubility, and some leaching may occur with rigorous washing.

Polysciences' streptavidin coated beads can be used in conjunction with a biotinylated ligand, antibody, DNA or RNA to form a bridge to the microsphere, providing the simple addition of a solid support. The streptavidin-biotin bond strength approaches that of a covalent bond, with an association constant (Ka 10^15 Mol-1) in an aqueous solution. This makes the bond not only essentially irreversible, but also supplies an interaction of high affinitiy and specificity.

Polysciences offers multifluorescent microspheres in three sizes. Each microsphere is dyed with three different fluorescent dyes with excitation maxima of 377, 517 and 588nm, and emission maxima of 479, 546 and 612nm, respectively. These microspheres are packaged as 2.5% aqueous suspensions.

Fluoresbrite® Yellow Green Microspheres have excitation and emission spectra similar to FITC with excitation maxima of 441nm and emission maxima at 485nm. They are one of the brightest microspheres available at this wavelength and are used extensively in phagocytosis studies, flow cytometry and diagnostic assays.

Our dyed Polybeads® are packaged in an economical 2.5% aqueous suspension and are available in a variety of sizes and colors.

Polysciences offers multifluorescent microspheres in three sizes. Each microsphere is dyed with three different fluorescent dyes with excitation maxima of 377, 517 and 588nm, and emission maxima of 479, 546 and 612nm, respectively. These microspheres are packaged as 2.5% aqueous suspensions.

Fluoresbrite® Yellow Green Microspheres have excitation and emission spectra similar to FITC with excitation maxima of 441nm and emission maxima at 485nm. They are one of the brightest microspheres available at this wavelength and are used extensively in phagocytosis studies, flow cytometry and diagnostic assays.

Polybead® Amino Microspheres are monodisperse polystyrene microspheres that contain surface primary amine groups. Protein coupling using glutaraldehyde as a coupling agent will result in protein binding 11-12 carbon atoms from the surface of the bead. These microspheres are packaged as 2.5% solids (w/v) aqueous suspensions.

Fluoresbrite® Polychromatic Red Microspheres will fluoresce in different colors, depending on the light source and filters used. When viewed under a UV light source, the beads will appear as vivid orange. Microscopic viewing using a 475-490nm filter shows an extremely bright red fluorescence, while use of a 545-610nm filter yields a yellow fluorescence with excitation maxima of 491nm and 512nm and emission maxima at 554nm.

Our freeze-drying technique reduces the aggregation usually associated with dried beads. Dry material allows for the buffer of choice to be easily added.

Polybead® Carboxylate Microspheres are monodisperse polystyrene microspheres that contain surface carboxyl groups. This allows for the covalent binding of proteins to the microparticle surface. These microspheres are packaged as 2.5% solids (w/v) aqueous suspensions.

Polybead® Carboxylate Microspheres are monodisperse polystyrene microspheres that contain surface carboxyl groups. This allows for the covalent binding of proteins to the bead surface. These microspheres are packaged as 2.5% solids (w/v) aqueous suspensions.

Polybead® Carboxylate Microspheres are monodisperse polystyrene microspheres that contain surface carboxyl groups. This allows for the covalent binding of proteins to the bead surface. These microspheres are packaged as 2.5% solids (w/v) aqueous suspensions.

Polybead® Carboxylate Microspheres are monodisperse polystyrene microspheres that contain surface carboxyl groups. This allows for the covalent binding of proteins to the bead surface. These microspheres are packaged as 2.5% solids (w/v) aqueous suspensions.

Polybead® Carboxylate Microspheres are monodisperse polystyrene microspheres that contain surface carboxyl groups. This allows for the covalent binding of proteins to the bead surface. These microspheres are packaged as 2.5% solids (w/v) aqueous suspensions.

Polybead® Carboxylate Microspheres are monodisperse polystyrene microspheres that contain surface carboxyl groups. This allows for the covalent binding of proteins to the bead surface. These microspheres are packaged as 2.5% solids (w/v) aqueous suspensions.

Polybead® Carboxylate Microspheres are monodisperse polystyrene microspheres that contain surface carboxyl groups. This allows for the covalent binding of proteins to the bead surface. These microspheres are packaged as 2.5% solids (w/v) aqueous suspensions.

Polybead® Carboxylate Microspheres are monodisperse polystyrene microspheres that contain surface carboxyl groups. This allows for the covalent binding of proteins to the bead surface. These microspheres are packaged as 2.5% solids (w/v) aqueous suspensions.

Polybead® Carboxylate Microspheres are monodisperse polystyrene microspheres that contain surface carboxyl groups. This allows for the covalent binding of proteins to the bead surface. These microspheres are packaged as 2.5% solids (w/v) aqueous suspensions.

Polybead® Carboxylate Microspheres are monodisperse polystyrene microspheres that contain surface carboxyl groups. This allows for the covalent binding of proteins to the bead surface. These microspheres are packaged as 2.5% solids (w/v) aqueous suspensions.

Our dyed Polybeads® are packaged in an economical 2.5% aqueous suspension and are available in a variety of sizes and colors.

Our dyed Polybeads® are packaged in an economical 2.5% aqueous suspension and are available in a variety of sizes and colors.

Polysciences is the leading supplier of dyed microspheres to the latex agglutination and membrane-enhanced immunoassay marketplace. Diagnostic manufacturers rely on our precisely controlled particle synthesis to ensure reproducibility in both assay design and performance.

Polysciences is the leading supplier of dyed microspheres to the latex agglutination and membrane-enhanced immunoassay marketplace. Diagnostic manufacturers rely on our precisely controlled particle synthesis to ensure reproducibility in both assay design and performance. Our dyed Polybeads™ are packaged in an economical 2.5% aqueous suspension.

Polysciences is the leading supplier of dyed microspheres to the latex agglutination and membrane-enhanced immunoassay marketplace. Diagnostic manufacturers rely on our precisely controlled particle synthesis to ensure reproducibility in both assay design and performance.

Polysciences is the leading supplier of dyed microspheres to the latex agglutination and membrane-enhanced immunoassay marketplace. Diagnostic manufacturers rely on our precisely controlled particle synthesis to ensure reproducibility in both assay design and performance. Our dyed Polybeads® are packaged in an economical 2.5% aqueous suspension.

Polysciences is the leading supplier of dyed microspheres to the latex agglutination and membrane-enhanced immunoassay marketplace. Diagnostic manufacturers rely on our precisely controlled particle synthesis to ensure reproducibility in both assay design and performance.

Polysciences is the leading supplier of dyed microspheres to the latex agglutination and membrane-enhanced immunoassay marketplace. Diagnostic manufacturers rely on our precisely controlled particle synthesis to ensure reproducibility in both assay design and performance.

Our dyed Polybeads® are packaged in an economical 2.5% aqueous suspension and are available in a variety of sizes and colors.

Polysciences is the leading supplier of dyed microspheres to the latex agglutination and membrane-enhanced immunoassay marketplace. Diagnostic manufacturers rely on our precisely controlled particle synthesis to ensure reproducibility in both assay design and performance.

Our dyed Polybeads® are packaged in an economical 2.5% aqueous suspension and are available in a variety of sizes and colors.

Polysciences is the leading supplier of dyed microspheres to the latex agglutination and membrane-enhanced immunoassay marketplace. Diagnostic manufacturers rely on our precisely controlled particle synthesis to ensure reproducibility in both assay design and performance.

Polysciences is the leading supplier of dyed microspheres to the latex agglutination and membrane-enhanced immunoassay marketplace. Diagnostic manufacturers rely on our precisely controlled particle synthesis to ensure reproducibility in both assay design and performance.

Polybead® Carboxy-Sulfate Microspheres are monodisperse, surfactant-free polystyrene microspheres. We manufacture these particles to have sulfate charge groups in addition to carboxyl groups. These microspheres are packaged as 2.5% solids (w/v) aqueous suspensions.

Our freeze-drying technique reduces the aggregation usually associated with dried beads. Dry material allows for the buffer of choice to be easily added.

Kit contains 1ml of dyed ~1.0µm monodisperse polystyrene microspheres (2.5% solids in water) for each of these colors: red, blue, yellow, violet, and unlabeled.

Kit contains 5ml of blue dyed monodisperse polystyrene microspheres (2.5% solids in water) for each of these nominal size: 0.2µm, 0.5µm, 1.0µm and 3.0µm.

Kit contains 1ml of dyed and flourescent ~1.0µm monodisperse polystyrene microspheres (2.5% solids in water) for each of these colors: red, blue, yellow, violet, and Fluoresbrite® YG, BB, YO, PC Red, and unlabeled.

Kit contains 5ml of amino polystyrene monodisperse microspheres (2.5% solids in water) for each of these nominal sizes: 0.5µm, 0.75µm, 1.0µm and 3.0µm.

Kit contains 5ml of carboxylate polystyrene monodisperse microspheres (2.5% solids in water) for each of these nominal sizes: 0.5µm, 0.75µm, 1.0µm, 2.0µm and 3.0µm.

Polybead® Hydroxylate Microspheres are monodisperse particles that contain surface hydroxyl groups. These particles are packaged in an economical suspension of 2.5% solids in water.

Polybead® Hydroxylate Microspheres are monodisperse particles that contain surface hydroxyl groups. These particles are packaged in an economical suspension of 2.5% solids in water.

Polybead® Hydroxylate Microspheres are monodisperse particles that contain surface hydroxyl groups. These particles are packaged in an economical suspension of 2.5% solids in water.

Polybead® Hydroxylate Microspheres are monodisperse particles that contain surface hydroxyl groups. These particles are packaged in an economical suspension of 2.5% solids in water.

Polybead® Hydroxylate Microspheres are monodisperse particles that contain surface hydroxyl groups. These particles are packaged in an economical suspension of 2.5% solids in water.

Polybead® Hydroxylate Microspheres are monodisperse particles that contain surface hydroxyl groups. These particles are packaged in an economical suspension of 2.5% solids in water.

Polybead® Microspheres are monodisperse polystyrene microspheres available in sizes from 50nm to 90μm. Our experienced chemists control the synthesis to provide precise monodisperse particle size distributions. These particles contain a slight anionic charge from sulfate ester.

Polybead® Microspheres are monodisperse polystyrene microspheres available in sizes from 50nm to 90μm. Our experienced chemists control the synthesis to provide precise monodisperse particle size distributions. These particles contain a slight anionic charge from sulfate ester.

Polybead® Microspheres are monodisperse polystyrene microspheres available in sizes from 50nm to 90μm. Our experienced chemists control the synthesis to provide precise monodisperse particle size distributions. These particles contain a slight anionic charge from sulfate ester.

Polybead® Microspheres are monodisperse polystyrene microspheres available in sizes from 50nm to 90μm. Our experienced chemists control the synthesis to provide precise monodisperse particle size distributions. These particles contain a slight anionic charge from sulfate ester.

Polybead® Microspheres are monodisperse polystyrene microspheres available in sizes from 50nm to 90μm. Our experienced chemists control the synthesis to provide precise monodisperse particle size distributions. These particles contain a slight anionic charge from sulfate ester.

Polybead® Microspheres are monodisperse polystyrene microspheres available in sizes from 50nm to 90μm. Our experienced chemists control the synthesis to provide precise monodisperse particle size distributions. These particles contain a slight anionic charge from sulfate ester.

Polybead® Microspheres are monodisperse polystyrene microspheres available in sizes from 50nm to 90μm. Our experienced chemists control the synthesis to provide precise monodisperse particle size distributions. These particles contain a slight anionic charge from sulfate ester.

Polybead® Microspheres are monodisperse polystyrene microspheres available in sizes from 50nm to 90μm. Diameters 4.5μm and larger are crosslinked with divinylbenzene (DVB). Our experienced chemists control the synthesis to provide precise monodisperse particle size distributions. These particles contain a slight anionic charge from sulfate ester.

Polybead® Microspheres are monodisperse polystyrene microspheres available in sizes from 50nm to 90μm. Diameters 4.5μm and larger are crosslinked with divinylbenzene (DVB). Our experienced chemists control the synthesis to provide precise monodisperse particle size distributions. These particles contain a slight anionic charge from sulfate ester.

Polybead® Microspheres are monodisperse polystyrene microspheres available in sizes from 50nm to 90μm. Diameters 4.5μm and larger are crosslinked with divinylbenzene (DVB). Our experienced chemists control the synthesis to provide precise monodisperse particle size distributions. These particles contain a slight anionic charge from sulfate ester.

Polybead® Microspheres are monodisperse polystyrene microspheres available in sizes from 50nm to 90μm. Diameters 4.5µm and larger are crosslinked with divinylbenzene (DVB). Our experienced chemists control the synthesis to provide precise monodisperse particle size distributions. These particles contain a slight anionic charge from sulfate ester.

Polybead® Microspheres are monodisperse polystyrene microspheres available in sizes from 50nm to 90μm. Diameters 4.5μm and larger are crosslinked with divinylbenzene (DVB). Our experienced chemists control the synthesis to provide precise monodisperse particle size distributions. These particles contain a slight anionic charge from sulfate ester.

Polybead® Microspheres are monodisperse polystyrene microspheres available in sizes from 50nm to 90μm. Diameters 4.5μm and larger are crosslinked with divinylbenzene (DVB). Our experienced chemists control the synthesis to provide precise monodisperse particle size distributions. These particles contain a slight anionic charge from sulfate ester.

Polybead® Microspheres are monodisperse polystyrene microspheres available in sizes from 50nm to 90μm. Our experienced chemists control the synthesis to provide precise monodisperse particle size distributions. These particles contain a slight anionic charge from sulfate ester.

Our dyed Polybeads® are packaged in an economical 2.5% aqueous suspension and are available in a variety of sizes and colors.

Our dyed Polybeads® are packaged in an economical 2.5% aqueous suspension and are available in a variety of sizes and colors.

Our dyed Polybeads® are packaged in an economical 2.5% aqueous suspension and are available in a variety of sizes and colors.

Polysciences’ sulfate microspheres are monodisperse polystyrene particles that offer a higher level of surface sulfate groups than our standard polystyrene microspheres. These microspheres are packaged as 2.5% aqueous suspensions.

Polysciences’ sulfate microspheres are monodisperse polystyrene particles that offer a higher level of surface sulfate groups than our standard polystyrene microspheres. These microspheres are packaged as 2.5% aqueous suspensions.

Polysciences’ sulfate microspheres are monodisperse polystyrene particles that offer a higher level of surface sulfate groups than our standard polystyrene microspheres. These microspheres are packaged as 2.5% aqueous suspensions.

Polysciences’ sulfate microspheres are monodisperse polystyrene particles that offer a higher level of surface sulfate groups than our standard polystyrene microspheres. These microspheres are packaged as 2.5% aqueous suspensions.

Our dyed Polybeads® are packaged in an economical 2.5% aqueous suspension.

Our dyed Polybeads® are packaged in an economical 2.5% aqueous suspension and are available in a variety of sizes and colors.

Our dyed Polybeads® are packaged in an economical 2.5% aqueous suspension and are available in a variety of sizes and colors.

Our dyed Polybeads™ are packaged in an economical 2.5% aqueous suspension.

Our dyed Polybeads® are packaged in an economical 2.5% aqueous suspension and are available in a variety of sizes and colors.

Our dyed Polybeads® are packaged in an economical 2.5% aqueous suspension and are available in a variety of sizes and colors.

Our dyed Polybeads® are packaged in an economical 2.5% aqueous suspension and are available in a variety of sizes and colors.

Our dyed Polybeads® are packaged in an economical 2.5% aqueous suspension and are available in a variety of sizes and colors.

Our dyed Polybeads® are packaged in an economical 2.5% aqueous suspension and are available in a variety of sizes and colors.

Our dyed Polybeads® are packaged in an economical 2.5% aqueous suspension and are available in a variety of sizes and colors.

Protein conjugated microspheres are offered as: antibodies, Protein A, and Protein G covalently coupled to fluorescent YG, non-fluorescent, and blue dyed polystyrene microspheres. Antibody conjugated microspheres can be used to detect trace amounts of specific antigens in solution and to deplete them from solution. Microspheres coupled with Protein A and Protein G will bind to the Fc portion of antibodies raised in most mammals.

Protein Conjugated Microspheres are offered as: antibodies, Protein A, and Protein G covalently coupled to fluorescent YG, non-fluorescent, and blue dyed polystyrene microspheres. Antibody conjugated microspheres can be used to detect trace amounts of specific antigens in solution and to deplete them from solution. Microspheres coupled with Protein A and Protein G will bind to the Fc portion of antibodies raised in most mammals.

Protein conjugated microspheres are offered as: antibodies, Protein A, and Protein G covalently coupled to fluorescent YG, non-fluorescent, and blue dyed polystyrene microspheres. Antibody conjugated microspheres can be used to detect trace amounts of specific antigens in solution and to deplete them from solution. Microspheres coupled with Protein A and Protein G will bind to the Fc portion of antibodies raised in most mammals.

Polysciences offers multifluorescent microspheres in three sizes. Each microsphere is dyed with three different fluorescent dyes with excitation maxima of 377, 517 and 588nm, and emission maxima of 479, 546 and 612nm, respectively. These microspheres are packaged as 2.5% aqueous suspensions.

Polysciences offers multifluorescent microspheres in three sizes. Each microsphere is dyed with three different fluorescent dyes with excitation maxima of 377, 517 and 588nm, and emission maxima of 479, 546 and 612nm, respectively. These microspheres are packaged as 2.5% aqueous suspensions.

Use for applications including:

• Flow tests
• Filter tests
• Diagnostic tests
• Optical and electronic instrument testing and calibration
• Packaged as a 2.5% aqueous solution in a convenient dropper bottle.

Use for applications including:

• Flow tests
• Filter tests
• Diagnostic tests
• Optical and electronic instrument testing and calibration

Packaged as a 2.5% aqueous solution in a convenient dropper bottle.

Use for applications including:

• Flow tests
• Filter tests
• Diagnostic tests
• Optical and electronic instrument testing and calibration

Packaged as a 2.5% aqueous solution in a convenient dropper bottle.

Use for applications including:

• Flow tests
• Filter tests
• Diagnostic tests
• Optical and electronic instrument testing and calibration

Packaged as a 2.5% aqueous solution in a convenient dropper bottle.

Kit contains 1ml of standard monodisperse polystyrene microspheres (2.5% solids [w/v] in water) for each of these nominal sizes: 0.05μm, 0.20μm, 0.50μm, 1.0μm, 45.0μm and 90.0μm.

Kit contains 5ml of standard monodisperse polystyrene microspheres (2.5% solids [w/v] in water) for each of these nominal sizes: 0.5μm, 0.75μm, 1.0μm, 2.0μm and 3.0μm.

Polysciences offers europium chelate microspheres in a sampler pack (1mL of 0.10μm, 0.20μm, 0.30μm) to address the needs of individual assays, including immunochromatographic and microwell-based formats.

Fluoresbrite® carboxylate microspheres are fluorescent monodispersed polystyrene microspheres that have carboxylate groups on their surfaces which can be activated for the covalent coupling of proteins. Polysciences’ Fluoresbrite® particles are used worldwide in phagocytosis and neural retrograde transport studies, and as markers for cell bound antigens. These microspheres are packaged as 2.5% aqueous suspensions.

Fluoresbrite® carboxylate microspheres are fluorescent monodispersed polystyrene microspheres that have carboxylate groups on their surfaces which can be activated for the covalent coupling of proteins. Polysciences’ Fluoresbrite® particles are used worldwide in phagocytosis and neural retrograde transport studies, and as markers for cell bound antigens. These microspheres are packaged as 2.5% aqueous suspensions.

Fluoresbrite® carboxylate microspheres are fluorescent monodispersed polystyrene microspheres that have carboxylate groups on their surfaces which can be activated for the covalent coupling of proteins. Polysciences’ Fluoresbrite® particles are used worldwide in phagocytosis and neural retrograde transport studies, and as markers for cell bound antigens.

Fluoresbrite® carboxylate microspheres are fluorescent monodispersed polystyrene microspheres that have carboxylate groups on their surfaces which can be activated for the covalent coupling of proteins. Polysciences’ Fluoresbrite® particles are used worldwide in phagocytosis and neural retrograde transport studies, and as markers for cell bound antigens. These microspheres are packaged as 2.5% aqueous suspensions.

Fluoresbrite® carboxylate microspheres are fluorescent monodispersed polystyrene microspheres that have carboxylate groups on their surfaces which can be activated for the covalent coupling of proteins. Polysciences’ Fluoresbrite® particles are used worldwide in phagocytosis and neural retrograde transport studies, and as markers for cell bound antigens.

Fluoresbrite® carboxylate microspheres are fluorescent monodispersed polystyrene microspheres that have carboxylate groups on their surfaces which can be activated for the covalent coupling of proteins. Polysciences’ Fluoresbrite® particles are used worldwide in phagocytosis and neural retrograde transport studies, and as markers for cell bound antigens. These microspheres are packaged as 2.5% aqueous suspensions.

Fluoresbrite® carboxylate microspheres are fluorescent monodispersed polystyrene microspheres that have carboxylate groups on their surfaces which can be activated for the covalent coupling of proteins. Polysciences’ Fluoresbrite® particles are used worldwide in phagocytosis and neural retrograde transport studies, and as markers for cell bound antigens. These microspheres are packaged as 2.5% aqueous suspensions.

Fluoresbrite® carboxylate microspheres are fluorescent monodispersed polystyrene microspheres that have carboxylate groups on their surfaces which can be activated for the covalent coupling of proteins. Polysciences’ Fluoresbrite® particles are used worldwide in phagocytosis and neural retrograde transport studies, and as markers for cell bound antigens. These microspheres are packaged as 2.5% aqueous suspensions.

Kit contains 1ml each of 0.50µm Fluoresbrite® monodisperse microspheres (2.5% solids in water) containing dyes with these excitation maxima: 273nm, 360nm, 441nm, 529nm, 641nm and 763nm.

Components of this kit are also available individually.

Polysciences’ Size Range Kits allow you to evaluate which fluorescent particle size performs optimally for your specific application. These yellow green (YG) beads are economically packaged in 1ml volumes.

Kit contains 1ml of Fluoresbrite® monodisperse microspheres (2.5% solids in water) for each of these nominal sizes: 0.10µm, 0.20µm, 0.50µm, 0.75µm and 1.0µm.

Polysciences’ Size Range Kits allow you to evaluate which fluorescent particle size performs optimally for your specific application. These yellow green (YG) beads are economically packaged in 1ml volumes.

Kit contains 1ml of Fluoresbrite® monodisperse microspheres (2.5% solids in water) for each of these nominal sizes: 1.75µm, 2.0µm, 3.0µm, 4.5µm and 6.0µm.

Fluoresbrite® Polychromatic Red Microspheres will fluoresce in different colors, depending on the light source and filters used. When viewed under a UV light source, the beads will appear as vivid orange. Microscopic viewing using a 475-490nm filter shows an extremely bright red fluorescence, while use of a 545-610nm filter yields a yellow fluorescence with excitation maxima of 491nm and 512nm and emission maxima at 554nm.

Fluoresbrite® Polychromatic Red Microspheres will fluoresce in different colors, depending on the light source and filters used. When viewed under a UV light source, the beads will appear as vivid orange. Microscopic viewing using a 475-490nm filter shows an extremely bright red fluorescence, while use of a 545-610nm filter yields a yellow fluorescence with excitation maxima of 491nm and 512nm and emission maxima at 554nm.

These fluorescent microspheres incorporate a series of polymerizable fluorescent compounds which produce fluorescence at a variety of wavelengths. The microspheres listed below have a nominal diameter of 1µm. The fluorescence is uniformly distributed throughout the outer 25% of the radii of the particles.

These fluorescent microspheres incorporate a series of polymerizable fluorescent compounds which produce fluorescence at a variety of wavelengths. The microspheres listed below have a nominal diameter of 1µm. The fluorescence is uniformly distributed throughout the outer 25% of the radii of the particles.

These fluorescent microspheres incorporate a series of polymerizable fluorescent compounds which produce fluorescence at a variety of wavelengths. The microspheres listed below have a nominal diameter of 1µm. The fluorescence is uniformly distributed throughout the outer 25% of the radii of the particles.

These fluorescent microspheres incorporate a series of polymerizable fluorescent compounds which produce fluorescence at a variety of wavelengths. These microspheres have a nominal diameter of 1µm. The fluorescence is uniformly distributed throughout the outer 25% of the radii of the particle.

These fluorescent microspheres incorporate a series of polymerizable fluorescent compounds which produce fluorescence at a variety of wavelengths. The microspheres listed below have a nominal diameter of 1µm. The fluorescence is uniformly distributed throughout the outer 25% of the radii of the particles.

Fluoresbrite® carboxylate microspheres are fluorescent monodispersed polystyrene microspheres that have carboxylate groups on their surfaces which can be activated for the covalent coupling of proteins. Polysciences’ Fluoresbrite® particles are used worldwide in phagocytosis and neural retrograde transport studies, and as markers for cell bound antigens. These microspheres are packaged as 2.5% aqueous suspensions.

Fluoresbrite® carboxylate microspheres are fluorescent monodispersed polystyrene microspheres that have carboxylate groups on their surfaces which can be activated for the covalent coupling of proteins. Polysciences’ Fluoresbrite® particles are used worldwide in phagocytosis and neural retrograde transport studies, and as markers for cell bound antigens. These microspheres are packaged as 2.5% aqueous suspensions.

Fluoresbrite® carboxylate microspheres are fluorescent monodispersed polystyrene microspheres that have carboxylate groups on their surfaces which can be activated for the covalent coupling of proteins. Polysciences’ Fluoresbrite® particles are used worldwide in phagocytosis and neural retrograde transport studies, and as markers for cell bound antigens. These microspheres are packaged as 2.5% aqueous suspensions.

Fluoresbrite® carboxylate microspheres are fluorescent monodispersed polystyrene microspheres that have carboxylate groups on their surfaces which can be activated for the covalent coupling of proteins. Polysciences’ Fluoresbrite® particles are used worldwide in phagocytosis and neural retrograde transport studies, and as markers for cell bound antigens. These microspheres are packaged as 2.5% aqueous suspensions.

Fluoresbrite® carboxylate microspheres are fluorescent monodispersed polystyrene microspheres that have carboxylate groups on their surfaces which can be activated for the covalent coupling of proteins. Polysciences’ Fluoresbrite® particles are used worldwide in phagocytosis and neural retrograde transport studies, and as markers for cell bound antigens. These microspheres are packaged as 2.5% aqueous suspensions.

Fluoresbrite® carboxylate microspheres are fluorescent monodispersed polystyrene microspheres that have carboxylate groups on their surfaces which can be activated for the covalent coupling of proteins. Polysciences’ Fluoresbrite® particles are used worldwide in phagocytosis and neural retrograde transport studies, and as markers for cell bound antigens. These microspheres are packaged as 2.5% aqueous suspensions.

Fluoresbrite® carboxylate microspheres are fluorescent monodispersed polystyrene microspheres that have carboxylate groups on their surfaces which can be activated for the covalent coupling of proteins. Polysciences’ Fluoresbrite® particles are used worldwide in phagocytosis and neural retrograde transport studies, and as markers for cell bound antigens. These microspheres are packaged as 2.5% aqueous suspensions.

Fluoresbrite® carboxylate microspheres are fluorescent monodispersed polystyrene microspheres that have carboxylate groups on their surfaces which can be activated for the covalent coupling of proteins. Polysciences’ Fluoresbrite® particles are used worldwide in phagocytosis and neural retrograde transport studies, and as markers for cell bound antigens.

Fluoresbrite® carboxylate microspheres are fluorescent monodispersed polystyrene microspheres that have carboxylate groups on their surfaces which can be activated for the covalent coupling of proteins. Polysciences’ Fluoresbrite® particles are used worldwide in phagocytosis and neural retrograde transport studies, and as markers for cell bound antigens.

Fluoresbrite® carboxylate microspheres are fluorescent monodispersed polystyrene microspheres that have carboxylate groups on their surfaces which can be activated for the covalent coupling of proteins. Polysciences’ Fluoresbrite® particles are used worldwide in phagocytosis and neural retrograde transport studies, and as markers for cell bound antigens. These microspheres are packaged as 2.5% aqueous suspensions.

Fluoresbrite® carboxylate microspheres are fluorescent monodispersed polystyrene microspheres that have carboxylate groups on their surfaces which can be activated for the covalent coupling of proteins. Polysciences’ Fluoresbrite® particles are used worldwide in phagocytosis and neural retrograde transport studies, and as markers for cell bound antigens. These microspheres are packaged as 2.5% aqueous suspensions.

Fluoresbrite® carboxylate microspheres are fluorescent monodispersed polystyrene microspheres that have carboxylate groups on their surfaces which can be activated for the covalent coupling of proteins. Polysciences’ Fluoresbrite® particles are used worldwide in phagocytosis and neural retrograde transport studies, and as markers for cell bound antigens. These microspheres are packaged as 2.5% aqueous suspensions.

Fluoresbrite® carboxylate microspheres are fluorescent monodispersed polystyrene microspheres that have carboxylate groups on their surfaces which can be activated for the covalent coupling of proteins. Polysciences’ Fluoresbrite® particles are used worldwide in phagocytosis and neural retrograde transport studies, and as markers for cell bound antigens. These microspheres are packaged as 2.5% aqueous suspensions.

Fluoresbrite® carboxylate microspheres are fluorescent monodispersed polystyrene microspheres that have carboxylate groups on their surfaces which can be activated for the covalent coupling of proteins. Polysciences’ Fluoresbrite® particles are used worldwide in phagocytosis and neural retrograde transport studies, and as markers for cell bound antigens. These microspheres are packaged in 2.5% aqueous suspensions.

Fluoresbrite® carboxylate microspheres are fluorescent monodispersed polystyrene microspheres that have carboxylate groups on their surfaces which can be activated for the covalent coupling of proteins. Polysciences’ Fluoresbrite® particles are used worldwide in phagocytosis and neural retrograde transport studies, and as markers for cell bound antigens. These microspheres are packaged as 2.5% aqueous suspensions.

Fluoresbrite® Yellow Green Microspheres have excitation and emission spectra similar to FITC with excitation maxima of 441nm and emission maxima at 485nm. They are one of the brightest microspheres available at this wavelength and are used extensively in phagocytosis studies, flow cytometry and diagnostic assays.

Fluoresbrite® Yellow Green Microspheres have excitation and emission spectra similar to FITC with excitation maxima of 441nm and emission maxima at 485nm. They are one of the brightest microspheres available at this wavelength and are used extensively in phagocytosis studies, flow cytometry and diagnostic assays.

Fluoresbrite® Yellow Green Microspheres have excitation and emission spectra similar to FITC with excitation maxima of 441nm and emission maxima at 485nm. They are one of the brightest microspheres available at this wavelength and are used extensively in phagocytosis studies, flow cytometry and diagnostic assays.

Fluoresbrite® Yellow Green Microspheres have excitation and emission spectra similar to FITC with excitation maxima of 441nm and emission maxima at 485nm. They are one of the brightest microspheres available at this wavelength and are used extensively in phagocytosis studies, flow cytometry and diagnostic assays.

Fluoresbrite® Yellow Green Microspheres have excitation and emission spectra similar to FITC with excitation maxima of 441nm and emission maxima at 485nm. They are one of the brightest microspheres available at this wavelength and are used extensively in phagocytosis studies, flow cytometry and diagnostic assays.

Fluoresbrite® Yellow Green Microspheres have excitation and emission spectra similar to FITC with excitation maxima of 441nm and emission maxima at 485nm. They are one of the brightest microspheres available at this wavelength and are used extensively in phagocytosis studies, flow cytometry and diagnostic assays.

Fluoresbrite® Yellow Green Microspheres have excitation and emission spectra similar to FITC with excitation maxima of 441nm and emission maxima at 485nm. They are one of the brightest microspheres available at this wavelength and are used extensively in phagocytosis studies, flow cytometry and diagnostic assays.

Fluoresbrite® Yellow Green Microspheres have excitation and emission spectra similar to FITC with excitation maxima of 441nm and emission maxima at 485nm. They are one of the brightest microspheres available at this wavelength and are used extensively in phagocytosis studies, flow cytometry and diagnostic assays.

Fluoresbrite® Yellow Green Microspheres have excitation and emission spectra similar to FITC with excitation maxima of 441nm and emission maxima at 485nm. They are one of the brightest microspheres available at this wavelength and are used extensively in phagocytosis studies, flow cytometry and diagnostic assays.

Fluoresbrite® Yellow Green Microspheres have excitation and emission spectra similar to FITC with excitation maxima of 441nm and emission maxima at 485nm. They are one of the brightest microspheres available at this wavelength and are used extensively in phagocytosis studies, flow cytometry and diagnostic assays.

Fluoresbrite® Yellow Green Microspheres have excitation and emission spectra similar to FITC with excitation maxima of 441nm and emission maxima at 485nm. They are one of the brightest microspheres available at this wavelength and are used extensively in phagocytosis studies, flow cytometry and diagnostic assays.

This special grade of Fluoresbrite® Yellow Green Microspheres has been evaluated both for particle diameter, as well as the uniformity of the fluorescent dye distribution. Instrument manufacturers have demanded these high quality particles for their flow cytometry standards.

This special grade of Fluoresbrite® Yellow Green Microspheres has been evaluated both for particle diameter, as well as the uniformity of the fluorescent dye distribution. Instrument manufacturers have demanded these high quality particles for their flow cytometry standards.

This special grade of Fluoresbrite® Yellow Green Microspheres has been evaluated both for particle diameter, as well as the uniformity of the fluorescent dye distribution. Instrument manufacturers have demanded these high quality particles for their flow cytometry standards.

This special grade of Fluoresbrite® Yellow Green Microspheres has been evaluated both for particle diameter, as well as the uniformity of the fluorescent dye distribution. Instrument manufacturers have demanded these high quality particles for their flow cytometry standards.

This special grade of Fluoresbrite® Yellow Green Microspheres has been evaluated both for particle diameter, as well as the uniformity of the fluorescent dye distribution. Instrument manufacturers have demanded these high quality particles for their flow cytometry standards.

Fluoresbrite® carboxylate microspheres are fluorescent monodispersed polystyrene microspheres that have carboxylate groups on their surfaces which can be activated for the covalent coupling of proteins. Polysciences’ Fluoresbrite® particles are used worldwide in phagocytosis and neural retrograde transport studies, and as markers for cell bound antigens. These microspheres are packaged as 2.5% aqueous suspensions. YO has limited water solubility, and some leaching may occur with rigorous washing.

Fluoresbrite® carboxylate microspheres are fluorescent monodispersed polystyrene microspheres that have carboxylate groups on their surfaces which can be activated for the covalent coupling of proteins. Polysciences’ Fluoresbrite® particles are used worldwide in phagocytosis and neural retrograde transport studies, and as markers for cell bound antigens. These microspheres are packaged as 2.5% aqueous suspensions. YO has limited water solubility, and some leaching may occur with rigorous washing.

Fluoresbrite® carboxylate microspheres are fluorescent monodispersed polystyrene microspheres that have carboxylate groups on their surfaces which can be activated for the covalent coupling of proteins. Polysciences’ Fluoresbrite® particles are used worldwide in phagocytosis and neural retrograde transport studies, and as markers for cell bound antigens. These microspheres are packaged as 2.5% aqueous suspensions. YO has limited water solubility, and some leaching may occur with rigorous washing.

Fluoresbrite® carboxylate microspheres are fluorescent monodispersed polystyrene microspheres that have carboxylate groups on their surfaces which can be activated for the covalent coupling of proteins. Polysciences’ Fluoresbrite® particles are used worldwide in phagocytosis and neural retrograde transport studies, and as markers for cell bound antigens. These microspheres are packaged as 2.5% aqueous suspensions. YO has limited water solubility, and some leaching may occur with rigorous washing.

Fluoresbrite® carboxylate microspheres are fluorescent monodispersed polystyrene microspheres that have carboxylate groups on their surfaces which can be activated for the covalent coupling of proteins. Polysciences’ Fluoresbrite® particles are used worldwide in phagocytosis and neural retrograde transport studies, and as markers for cell bound antigens. These microspheres are packaged as 2.5% aqueous suspensions. YO has limited water solubility, and some leaching may occur with rigorous washing.

Fluoresbrite® carboxylate microspheres are fluorescent monodispersed polystyrene microspheres that have carboxylate groups on their surfaces which can be activated for the covalent coupling of proteins. Polysciences’ Fluoresbrite® particles are used worldwide in phagocytosis and neural retrograde transport studies, and as markers for cell bound antigens. These microspheres are packaged as 2.5% aqueous suspensions. YO has limited water solubility, and some leaching may occur with rigorous washing.

Fluoresbrite® carboxylate microspheres are fluorescent monodispersed polystyrene microspheres that have carboxylate groups on their surfaces which can be activated for the covalent coupling of proteins. Polysciences’ Fluoresbrite® particles are used worldwide in phagocytosis and neural retrograde transport studies, and as markers for cell bound antigens. These microspheres are packaged as 2.5% aqueous suspensions. YO has limited water solubility, and some leaching may occur with rigorous washing.

Polybead Acrylate Microspheres are monodisperse microspheres (2.5% solids in water) with surfaces that contain copolymers of styrene and an acrylic ester. The reactive ester sites on the polymer will furnish points for further organic reactions which may lead to innovative forms of activation (e.g. reaction with ammonia may lead to amide formation which may then undergo Beckmann rearrangement).

~1.00µm

Polybead® Amino Microspheres are monodisperse polystyrene microspheres that contain surface primary amine groups. Protein coupling using glutaraldehyde as a coupling agent will result in protein binding 11-12 carbon atoms from the surface of the bead. These microspheres are packaged as 2.5% solids (w/v) aqueous suspensions.

Polybead® Amino Microspheres are monodisperse polystyrene microspheres that contain surface primary amine groups. Protein coupling using glutaraldehyde as a coupling agent will result in protein binding 11-12 carbon atoms from the surface of the bead. These microspheres are packaged as 2.5% solids (w/v) aqueous suspensions.

Polybead® Amino Microspheres are monodisperse polystyrene microspheres that contain surface primary amine groups. Protein coupling using glutaraldehyde as a coupling agent will result in protein binding 11-12 carbon atoms from the surface of the bead. These microspheres are packaged as 2.5% solids (w/v) aqueous suspensions.

Polybead® Amino Microspheres are monodisperse polystyrene microspheres that contain surface primary amine groups. Protein coupling using glutaraldehyde as a coupling agent will result in protein binding 11-12 carbon atoms from the surface of the bead. These microspheres are packaged as 2.5% solids (w/v) aqueous suspensions.

Polybead® Amino Microspheres are monodisperse polystyrene microspheres that contain surface primary amine groups. Protein coupling using glutaraldehyde as a coupling agent will result in protein binding 11-12 carbon atoms from the surface of the bead. These microspheres are packaged as 2.5% solids (w/v) aqueous suspensions.

Polybead® Amino Microspheres are monodisperse polystyrene microspheres that contain surface primary amine groups. Protein coupling using glutaraldehyde as a coupling agent will result in protein binding 11-12 carbon atoms from the surface of the bead. These microspheres are packaged as 2.5% solids (w/v) aqueous suspensions.

Use for applications including:

• Flow tests
• Filter tests
• Diagnostic tests
• Optical and electronic instrument testing and calibration

Packaged as a 2.5% aqueous solution in a convenient dropper bottle.

Use for applications including:

• Flow tests
• Filter tests
• Diagnostic tests
• Optical and electronic instrument testing and calibration

Packaged as a 2.5% aqueous solution in a convenient dropper bottle.

Our dyed Polybeads® are packaged in an economical 2.5% aqueous suspension and are available in a variety of sizes and colors. These blue dyed microspheres may be coated using adsorption, as described in Technical Data Sheet 238E. They also have amine groups that may be used for covalent coupling procedures using glutaraldehyde. See Technical Data Sheet 238D.

Our dyed Polybeads® are packaged in an economical 2.5% aqueous suspension and are available in a variety of sizes and colors. These blue dyed microspheres may be coated using adsorption, as described in Technical Data Sheet 238E. They also have amine groups that may be used for covalent coupling procedures using glutaraldehyde. See Technical Data Sheet 238D.

Our dyed Polybeads® are packaged in an economical 2.5% aqueous suspension and are available in a variety of sizes and colors. These blue dyed microspheres may be coated using adsorption, as described in Technical Data Sheet 238E. They also have amine groups that may be used for covalent coupling procedures using glutaraldehyde. See Technical Data Sheet 238D.

Our dyed Polybeads® are packaged in an economical 2.5% aqueous suspension and are available in a variety of sizes and colors. These blue dyed microspheres may be coated using adsorption, as described in Technical Data Sheet 238E. They also have amine groups that may be used for covalent coupling procedures using glutaraldehyde. See Technical Data Sheet 238D.

These blue dyed microspheres may be coated using adsorption, as described in Technical Data Sheet 238E. They also have amine groups that may be used for covalent coupling procedures using glutaraldehyde. See Technical Data Sheet 238D.

Our dyed Polybeads® are packaged in an economical 2.5% aqueous suspension and are available in a variety of sizes and colors.

Nominal Reference Value:

0.30µm packaged as 2.5% aqueous suspension

Our dyed Polybeads® are packaged in an economical 2.5% aqueous suspension and are available in a variety of sizes and colors.

Nominal Reference Values:

• 0.50µm particles packaged as 2.5% aqueous suspension.
• Coefficient of Variation (CV) = 3%

Our dyed Polybeads® are packaged in an economical 2.5% aqueous suspension and are available in a variety of sizes and colors.

Our dyed Polybeads® are packaged in an economical 2.5% aqueous suspension and are available in a variety of sizes and colors.

Polysciences is the leading supplier of dyed microspheres to the latex agglutination and membrane-enhanced immunoassay marketplace. Diagnostic manufacturers rely on our precisely controlled particle synthesis to ensure reproducibility in both assay design and performance.

Our dyed Polybeads® are packaged in an economical 2.5% aqueous suspension and are available in a variety of sizes and colors.

Our dyed Polybeads® are packaged in an economical 2.5% aqueous suspension and are available in a variety of sizes and colors.

Polybead® Carboxylate Microspheres are monodisperse polystyrene microspheres that contain surface carboxyl groups. This allows for the covalent binding of proteins to the bead surface. These microspheres are packaged as 2.5% solids (w/v) aqueous suspensions.

Polybead® Carboxylate Microspheres are monodisperse polystyrene microspheres that contain surface carboxyl groups. This allows for the covalent binding of proteins to the bead surface. These microspheres are packaged as 2.5% solids (w/v) aqueous suspensions.