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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Cytiva Sera-Mag SpeedBeads™ Carboxyl Magnetic Beads, hydrophilic

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.

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Pricing and Availability
Specifications

Content And Storage	2°C to 8°C
Diameter (Metric)	1 μm
Concentration	5% solids (50mg/mL)
For Use With (Application)	DNA Sample Prep,Protein Purification

Invitrogen™ FluoSpheres™ Carboxylate-Modified Microspheres

Achieve the brightest fluorescence with Carboxylate-Modified FluoSphere Microspheres, available in different colors and particle sizes.

Pricing and Availability
Specifications

Product Type	Carboxylate-Modified Microsphere
Surface Modification	Carboxylate
Material	Polystyrene
For Use With (Application)	Fluorescence Microscopy
Product Line	FLUOSPHERES™

Thermo Scientific™ 7000 Series Copolymer Microsphere Suspensions

Meet the need for particulate materials with a variety of particle sizes and properties with Thermo Scientific™ 7000 Series Copolymer Microsphere Suspensions.

Pricing and Availability
Specifications

Includes	General product handling 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.
Additive	Contains trace amount of surfactant to inhibit agglomeration and promote stability
Stability	Product stable for a minimum of 24 months
Description	Particles useful as model systems for fluid mechanics experiments and as challenge particles for large pore filtration systems.
Product Type	Copolymer Microsphere Suspensions
Color	White or Colorless
Refractive Index	1.59 at 589nm (25°C)
Concentration	10%
For Use With (Application)	Fluid Mechanics,Large Pore Filtration

Thermo Scientific™ MagnaBind™ Carboxyl Derivatized Beads

Enable benchtop magnetic affinity purification with these ligand-coated (streptavidin, Protein A and G, GAM IgG, GAR IgG) magnetic particles and magnet separators.

Pricing and Availability

Thermo Scientific™ Cyto-Plex™ Carboxylated Particles

Save time when measuring analytes with Thermo Scientific™ Cyto-Plex™ Carboxylated Particles, open platform particles for suspension array analysis.

Pricing and Availability
Specifications

Includes	Material Safety Data Sheet (MSDS) and Package Insert Sheet
Particle Density	1.06g/cm³
Content And Storage	Refrigerate when not in use; do not freeze. Store upright and keep bottle tightly sealed. Mix product by gentle inversion by hand or vortex mixer.
Additive	Sodium Azide Preservative, 0.05% Tween-20
Stability	Product stable for a minimum of 12 months
Contents	Polystyrene microspheres in water
Product Type	Carboxylated Particle
Surface Modification	Carboxylate-Modified
Color	Red
Material	Polystyrene with Copolymer Grafted Surface
Dye Type	Firefli™ Fluorescent Red (635/700nm)
Uniformity	≤2% CV

Thermo Scientific™ Fluoro-Max™ Fluorescent Carboxylate-Modified Particles

Lower detection limits of fluorescent assays by limiting background interference from relatively short-lived matrix fluorescence.

Pricing and Availability
Specifications

Particle Density	1.06g/cm³
Content And Storage	Unless otherwise stated, refrigerate (2° to 8°C) product when not in use but do not freeze. Shipment at ambient temperature. Store upright and keep bottle tightly sealed. Mix product with gentle inversion by hand or vortex mixer.
Stability	Product stable for a minimum of 36 months
Color	White
Binding Property	Carboxylate-modified
Material	Polystyrene or Polystyrene with Coploymer Grafted Surface
Concentration	1% solids
Dye Type	Europium Chelate
Includes	Package Insert Sheet containing Certicate of Analysis
Additive	0.05% Sodium Azide
Contents	Fluorescent red dyed polystyrene microspheres in water
Product Type	Fluroescent Carboxylate-Modified Particle
Surface Modification	Carboxylate-Modified
Uniformity	<5% CV

Cytiva Sera-Mag SpeedBeads™ Carboxyl Magnetic Beads, hydrophobic

Promotions are available

Pricing and Availability
Specifications

Content And Storage	2°C to 8°C
Diameter (Metric)	1 μm
Concentration	5% solids (50mg/mL)
For Use With (Application)	DNA Sample Prep,Protein Purification

Cytiva SpeedBeads™ Magnetic Neutravidin Coated Particles, 1 um, 1% solids, 0.05% Na azide

Capture of Biotinylated Probes. Their cauliflower-like structure gives Neutravidin beads high binding capacity. Neutravidin SpeedBeads combine fast reaction kinetics and low, non-specific binding for increased throughput and precision in immunoassay and molecular biology applications.

Promotions are available

Pricing and Availability
Specifications

Includes	0.05% Na azide
Content And Storage	2°C to 8°C
Diameter (Metric)	1 μm
Concentration	1% solids (10mg/mL)
For Use With (Application)	Immunoassays,cDNA Library Construction,Capture of Biotinylated Targets

IBA Lifesciences MagStrep 'Type3' Strep-Tactin Beads 5% Suspension

MagStrep 'type3' Strep-Tactin beads 5% suspension are magnetic beads to purify biotinylated proteins.

Pricing and Availability

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™

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%

Thermo Scientific™ PHARM-TROL™ Count Precision Size Standards

Document the reproducibility of a particle counter by permitting a continuous record of its performance.

Pricing and Availability
Specifications

Includes	Certificate of Calibration and Traceability to NIST
Particle Density	1.05g/cm³
Stability	Product stable for a minimum of 12 months
Contents	Polystyrene microspheres in water
Product Type	Count Control Particles
Color	White or Colorless
Refractive Index	1.59 at 589nm (25°C)
Material	Polystyrene
Concentration	3800 particles/mL ± 15%
For Use With (Application)	USP Verification
Size Distribution	<3%

Thermo Scientific™ 4000 Series Monosized Particles

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

Promotions are available

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.

Promotions are available

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™ Ezy-Cal™ Count Precision Size Standards

Meet the unique and demanding requirements of the contamination control laboratory in modern industries.

Promotions are available

Pricing and Availability
Specifications

Stability	Product stable for a minimum of three months
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

Microspheres

Microspheres

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