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™ 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

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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™ 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™ Duke Standards™ 2000 Series Uniform Polymer Particles

Analyze wide size range materials through laser diffraction or other methods with uniform polymer particles that mimic real world particles.

Pricing and Availability
Specifications

Includes	Material Safety Data Sheet (MSDS), Certificate of Calibration and Traceability to NIST
Particle Density	1.05g/cm³
Content And Storage	Store at room temperature or keep refrigerated. Keep bottle tightly sealed to avoid contamination.
Additive	Contains trace amount of surfactants
Stability	=24 months
Product Type	Polymer Particles
Color	White or Colorless
Refractive Index	1.59 at 589nm (25°C)
Quantity	15 mL
Material	Polystyrene Divinylbenzene (PS-DVB)
For Use With (Application)	Narrow Size Standard Deviation Applications

Thermo Scientific™ Dri-Cal™ Particle Size Standards

Use Thermo Scientific™ Dri-Cal™ Particle Size Standards for calibrating particle sizing and counting instruments that require dry particles.

Pricing and Availability
Specifications

Particle Density	1.05 g/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.
Stability	Product stable for a minimum of 24 months
Description	Used for calibrating particle sizing and counting instrumentation that require dry particles for measuring dry media.
Color	White
Quantity	1 g
Material	Polystyrene Divinylbenzene (PS-DVB)
Concentration	100% solids
For Use With (Application)	Dry Particle Counter Calibration
Includes	Certificate of Calibration and Traceability
Additive	May contain trace amount of dispersant
Contents	Dry Polystyrene (DVB) Microspheres
Product Type	Size Standard Particles
Refractive Index	1.59 at 589nm (25°C)

Thermo Scientific™ Validex™ Count Precision Size Standards

Validate the performance of liquid particle counters with Thermo Scientific™ Validex™ Count Precision Size Standards.

Pricing and Availability
Specifications

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 3 months
Description	Designed specifically for the drinking water industry to validate the performance of liquid particle counters.
Color	White or Colorless
Quantity	500 mL
Material	Polystyrene
Concentration	1000 particles/mL ± 10%
For Use With (Application)	Liquid Particle Counter Validation
Size Distribution	<3
Includes	Certificate of Calibration and Traceability to NIST
Additive	Contains trace amount of surfactant
Contents	Polymer particles in water
Product Type	Count Control Particles
Refractive Index	1.59 at 589nm (25°C)

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™ 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

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™ ChromoSphere™ Dry Dyed Polymer Particles

Achieve high visual contrast with polymer particles that are internally and deeply dyed in intense red or black.

Pricing and Availability
Specifications

Includes	Material Safety Data Sheet (MSDS)
Particle Density	1.05g/cm³
Content And Storage	Store at room temperature. Keep bottle tightly sealed to avoid contamination.
Additive	May contain trace amount of dispersant
Stability	Product stable for a minimum of 24 months
Contents	Dry dyed polystyrene (DVB) microspheres
Product Type	Polymer Particles
Refractive Index	1.59 at 589nm (25°C)
Material	Polystyrene Divinylbenzene (PS-DVB)
Uniformity	<10%

Thermo Scientific™ 5000 Series 0.31μm to 0.93μm Polymer Particle Suspensions

Meet the need for particulate materials with a variety of particle sizes and properties with Thermo Scientific™ 5000 Series Polymer Particle 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 for such applications as filter evaluation, checking and testing, light scattering research, fluid mechanics research, aerosol particle generation, dispersion studies, and many other research and development projects. They are not intended for use in instrument calibration.
Product Type	Polymer Particle Suspensions
Color	White or Colorless
Refractive Index	1.59 at 589nm (25°C)
Material	Polystyrene
Concentration	10%

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™ 4D Series Dry Microsphere Size Standards

Calibrate airborne optical particle counters to comply with ISO 21501-4 with Thermo Scientific™ 4D Series Dry Microsphere Size Standards.

Pricing and Availability
Specifications

Content And Storage	Unless otherwise stated, store at ambient room temperature. Store upright; keep bottle tightly sealed. Mix product with gentle inversion by hand or vortex mixer.
Additive	Trace flow agent
Contents	1g
Product Type	Size Standard Particles
Color	White
Refractive Index	1.59 at 589nm (25°C)
Material	Polystyrene Divinylbenzene (PS-DVB)
Concentration	100% solids
Certifications/Compliance	Certificate of Calibration and Traceability to NIST, MSDS
For Use With (Application)	Airborne Optical Particle Counter Calibration

Thermo Scientific™ Opti-Bind™ Polystyrene Sulfate Particles

Achieve maximum reactivity in many diagnostic applications with Thermo Scientific™ Opti-Bind™ Polystyrene Sulfate Particles.

Pricing and Availability
Specifications

Includes	Package Insert and Certificate of Analysis
Content And Storage	2°C to 8°C
Description	Opti-Bind Polystyrene Sulfate Particles
Product Type	Specialty Particles
Material	Polystyrene Sulfate
Shelf Life	10 Years
Certifications/Compliance	Includes Certificate of Analysis
Specialty Packaging	Opti-Bind Polystyrene particles are available in different concentrations and package sizes upon request.
For Use With (Application)	Diagnostic Assays

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)

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