Microspheres

Microspheres
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Thermo Scientific™ 4000 Series Monosized Particles
Minimize response of analytic systems to shape effects with monosized particles.
Includes | Certificate of Calibration and Traceability to NIST |
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Particle Density | 1.05g/cmÂł |
Stability | Product stable for a minimum of 24 months |
Description | NIST traceable particles that provide calibration of laser particle counters |
Product Type | Size Standard Particles |
Color | White or Colorless |
Material | Polystyrene |
Certifications/Compliance | Each package of standards contains a Certificate of Calibration and Traceability to NIST which includes a description of the calibration method and its uncertainty, and a table of chemical and physical properties. |
For Use With (Application) | Narrow Size Standard Deviation Applications |
Thermo Scientific™ 9000 Series Glass Particle Standards
Replace polystyrene spheres in many applications with dry glass NIST™-traceable size standards.
Content And Storage | Store at room temperature. Keep bottle tightly sealed to avoid contamination. |
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Additive | None |
Stability | Product stable for a minimum of 24 months |
Product Type | Size Standard Particles |
Color | White |
Quantity | 1 g |
For Use With (Application) | Narrow Size Standard Deviation Applications |
Thermo Scientific™ 3000 Series Nanosphere™ Size Standards
Conveniently check the sizes of bacteria, viruses, ribosomes and sub-cellular components with these size standards.
Particle Density | 1.05g/cmÂł |
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Content And Storage | 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. |
Stability | Product stable for a minimum of 24 months |
Description | 3000 Series Nanosphere Size Standards come in optimized concentrations for easy dispersal and colloidal stability. |
Color | White or Colorless |
Quantity | 15 mL |
Material | Polystyrene |
Concentration | 1% solids |
For Use With (Application) | Electron Microscope Calibration |
Includes | Certificate of Calibration and Traceability to NIST |
Additive | Contains trace amount of surfactant to inhibit agglomeration and promote stability |
Contents | Polymer particles in water |
Product Type | Size Standard Particles |
Refractive Index | 1.59 at 589nm (25°C) |
Thermo Scientific™ Fluoro-Max Green and Red Dry Fluorescent Particles
Improve sensitivity and detectability for analytical methods with fluorescent particles that feature bright, distinct colors.
Includes | Package Insert Sheet |
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Particle Density | 1.05g/cmÂł |
Content And Storage | Store at room temperature in a dry area. Store upright and keep bottle tightly sealed. Respiratory protection from dust is recommended. |
Additive | May contain trace amount of dispersant |
Stability | Product stable for a minimum of 24 months |
Contents | Dry dyed polystyrene (DVB) microspheres |
Product Type | Fluorescent Particle |
Refractive Index | 1.59 at 589nm (25°C) |
Material | Polystyrene Divinylbenzene (PS-DVB) |
Thermo Scientific™ COUNT-CAL™ Count Precision Size Standards
Minimize contamination by eliminating the need for serial dilutions and extensive sample handling with Thermo Scientific™ COUNT-CAL™ Count Precision Size Standards.
Includes | Certificate of Calibration and Traceability to NIST, Particle Counting Protocol |
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Stability | Product stable for a minimum of six months |
Description | Products provide a precise method for calibrating or checking the performance of laser particle counters |
Contents | Polystyrene microspheres in water |
Product Type | Count Control Particles |
Color | White or Colorless |
Refractive Index | 1.59 at 589nm (25°C) |
Quantity | 6 x 25 mL |
Material | Polystyrene |
Concentration | 3000 particles/mL ± 10% |
Certifications/Compliance | Certificate of Calibration and Traceability to NIST |
For Use With (Application) | Liquid Particle Counter Validation,USP Verification |
Size Distribution | <3% |
Thermo Scientific™ Dyed Red Aqueous Fluorescent Particles
Improve sensitivity and detectability for analytical methods with microsphere suspensions that are internally dyed and feature bright, high-contrast colors.
Includes | Package Insert Sheet |
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Particle Density | 1.05g/cmÂł |
Content And Storage | 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. |
Additive | Trace amounts of surfactant to inhibit agglomeration and promote stability |
Stability | Product stable for a minimum of 24 months |
Contents | Dyed polystyrene particles in water |
Product Type | Fluorescent Particle |
Color | Red |
Refractive Index | 1.59 at 589nm (25°C) |
Material | Polystyrene |
Concentration | 1% solids |
Dye Type | Firefli Fluorescent Red (542/612nm) |
Thermo Scientific™ Ezy-Cal™ Count Precision Size Standards
Meet the unique and demanding requirements of the contamination control laboratory in modern industries.
Stability | Product stable for a minimum of three months |
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Contents | Polystyrene microspheres in water |
Product Type | Count Control Particles |
Color | White or Colorless |
Refractive Index | 1.59 at 589nm (25°C) |
Quantity | 100 mL |
Material | Polystyrene |
Concentration | 2000 particles/mL ± 10% |
For Use With (Application) | Liquid Particle Counter Calibration |
Molecular Probes™ FluoSpheres™ Polystyrene Microspheres, 1.0 μm, orange fluorescent (540/560), for tracer studies
Microspheres (also called latex beads or latex particles) are spherical particles in the colloidal size range that are formed from an amorphous polymer such as polystyrene.
Molecular Probes™ FluoSpheres™ Polystyrene Microspheres, 15 μm, yellow fluorescent (515/534), for blood flow determination
Microspheres (also called latex beads or latex particles) are spherical particles in the colloidal size range that are formed from an amorphous polymer such as polystyrene.
Cytiva Sera-Mag SpeedBeads™ Carboxyl Magnetic Beads, hydrophobic
Excellent for coupling oligos or proteins directly to the beads. Their cauliflower-like structure gives Sera-Mag beads high binding capacity. The carboxyl groups on these beads can be activated by standard EDC/EDAC chemistry to react with free amino groups, forming amide bonds.

Content And Storage | 2°C to 8°C |
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Diameter (Metric) | 1 ÎĽm |
Concentration | 5% solids (50mg/mL) |
For Use With (Application) | DNA Sample Prep,Protein Purification |
Affymetrix eBioscience eBioscience™ MagniSort™ Mouse CD8 Naïve T cell Enrichment Kit
Designed for the magnetic separation of CD8 naĂŻve T cells by negative selection. It has been optimized for the isolation of mouse CD8 naĂŻve T cells from spleens or lymphnodes utilizing a biotinylated antibody cocktail and streptavidin-coated magnetic beads.
Invitrogen™ MagniSort™ Human CD8 Positive Selection Kit
Designed for the magnetic separation of CD8+ cells by positive selection. It has been optimized for the isolation of CD8+ cells from human peripheral blood monocuclear cells, utilizing a biotinylated Anti-Human CD8 antibody and streptavidin-coated magnetic beads.
Invitrogen™ MagniSort™ Mouse CD4 T cell Enrichment Kit
Designed for the magnetic separation of mouse CD4 T cells by negative selection. It has been optimized for the isolation of mouse CD4 T cells from spleens or lymph nodes utilizing a biotinylated antibody cocktail and streptavidin-coated magnetic beads.
Invitrogen™ eBioscience™ MagniSort™ Mouse CD90.2 Positive Selection Kit
Designed for the magnetic separation of CD90.2+ cells by positive selection. It has been optimized for the isolation of CD90.2+ cells from mouse spleens or lymph nodes utilizing a biotinylated Anti-Mouse CD90.2 antibody and streptavidin-coated magnetic beads.