Microspheres

Small, spherical particles available in a range of sizes, colors, and material compositions, and possessing various surface modifications for specialized applications. These applications include use in assaying, calibration, labeling, flow cytometry, etc.

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Thermo Scientific™ 4000 Series Monosized Particles

Minimize response of analytic systems to shape effects with monosized particles.

Pricing and Availability
Specifications

Includes	Certificate of Calibration and Traceability to NIST
Particle Density	1.05g/cm³
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™ 3000 Series Nanosphere™ Size Standards

Conveniently check the sizes of bacteria, viruses, ribosomes and sub-cellular components with these size standards.

Pricing and Availability
Specifications

Particle Density	1.05g/cm³
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™ 9000 Series Glass Particle Standards

Replace polystyrene spheres in many applications with dry glass NIST™-traceable size standards.

Pricing and Availability
Specifications

Content And Storage	Store at room temperature. Keep bottle tightly sealed to avoid contamination.
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™ 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.

Pricing and Availability
Specifications

Includes	Package Insert Sheet
Particle Density	1.05g/cm³
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™ Fluoro-Max Green and Red Dry Fluorescent Particles

Improve sensitivity and detectability for analytical methods with fluorescent particles that feature bright, distinct colors.

Pricing and Availability
Specifications

Includes	Package Insert Sheet
Particle Density	1.05g/cm³
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.

Pricing and Availability
Specifications

Includes	Certificate of Calibration and Traceability to NIST, Particle Counting Protocol
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%

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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.

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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.

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Gibco™ Dynabeads™ Human T-Activator CD3/CD28 for T Cell Expansion and Activation

Dynabeads Human T-Activator CD3/CD28 beads are 4.5-μm superparamagnetic beads covalently coupled with an optimized combination of anti-human CD3 and anti-human CD28 antibodies and intended for ex vivo activation and expansion/proliferation of human T cells.

Pricing and Availability
Specifications

Shipping Condition	Ambient Temperature
Clonality	Monoclonal
Target Species	Human T-cells
Host Species	Mouse
Surface Functionality	Epoxy
Isolation Technology	Magnetic Beads
Material	Magnetic Polystyrene
Concentration	4 x 10 ⁷ Beads/mL
For Use With (Application)	Activation and Expansion of T-cells
Regulatory Status	For Research Use Only
Reactivity	Human
For Use With (Equipment)	DynaMag™ Magnet
Product Type	Antibody Coated Bead
Diameter (Metric)	4.5 μm
Shelf Life	24 months from date of manufacture
Certifications/Compliance	ISO9001 and ISO13485
Uniformity	Monosized 4.5 μm (CV <5%)
Product Line	DynaBeads™

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Invitrogen™ Total Exosome Isolation Reagent (from cell culture media)

Total Exosome Isolation Reagent (from cell culture media) enables fast and efficient enrichment of intact exosomes from cell culture media samples.

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Gibco™ Dynabeads™ Mouse T-Activator CD3/CD28 for T-Cell Expansion and Activation

Dynabeads Mouse T-Activator CD3/CD28 beads are 4.5-μm superparamagnetic beads covalently coupled with an optimized combination of anti-mouse CD3 and anti-mouse CD28 antibodies and intended for ex vivo activation and expansion/proliferation of mouse T cells.

Pricing and Availability
Specifications

Shipping Condition	Ambient Temperature
Clonality	Monoclonal
Target Species	Mouse T-cells
Host Species	Hamster
Description	Monoclonal antibodies covalently bound to DynaBeads magnetic Beads
Surface Functionality	Epoxy
Isolation Technology	Magnetic Beads
Color	Brown
Material	Magnetic Polystyrene
Concentration	4 x 10 ⁷ Beads/mL
For Use With (Application)	Activation and Expansion of T-cells
Cell Type	Mouse T-cells
Regulatory Status	For Research Use Only
Reactivity	Mouse
For Use With (Equipment)	DynaMag™ Magnet
Product Type	Cell Expansion and Activation Kit
Diameter (Metric)	4.5 μm
Sample Type	Cell Cultures, Lymph Node, Spleen
Shelf Life	36 months from date of manufacture
Certifications/Compliance	ISO9001 and ISO13485
Uniformity	Monosized 4.5 μm (CV <5%)
Product Line	DynaBeads™

Invitrogen™ Total Exosome Isolation Kit (from plasma)

The Total Exosome Isolation Kit (from plasma) consists of two parts: Total Exosome Isolation Reagent (from plasma) and Proteinase K (20 mg/mL).

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Invitrogen™ Dynabeads™ MyOne™ Silane

An excellent tool for highly predictable and consistent extraction and isolation of nucleic acids from biological samples, following a simple magnetic separation protocol.

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Invitrogen™ TetraSpeck™ Microspheres, 0.1 μm, fluorescent blue/green/orange/dark red

Beads that each display four well-separated excitation/emission peaks

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Invitrogen™ Dynabeads™ CD45

Dynabeads™ CD45 are superparamagnetic beads covalently coupled to anti-human CD45 antibody that enable isolation or depletion of CD45⁺ leucocytes directly from whole blood, buffy coat, or MNC suspensions.

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Microspheres

Microspheres

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