Thermo Scientific™ Duke Standards™ 2000 Series Uniform Polymer Particles Available on GSA/VA Contract for Federal Government customers only.

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

Manufacturer: Thermo Scientific™ 2025A

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Catalog No. 09-980-010

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    Type Size Standard Particles
    For Use With (Application) Narrow Size Standard Deviation Applications
    Diameter (Metric) 25.1 ± 0.7μm
    Additive Contains trace amount of surfactants
    Includes Material Safety Data Sheet (MSDS), Certificate of Calibration and Traceability to NIST
    Material Polystyrene Divinylbenzene,Polystyrene Divinylbenzene
    Particle Density 1.05g/cm³
    Quantity 15mL
    Refractive Index 1.59 at 589nm (25°C)
    Size Distribution s = 1.7 µm, 6.8% CV
    Stability 24 months
    Storage Requirements Store at room temperature or keep refrigerated. Keep bottle tightly sealed to avoid contamination.
    Item Description Dia.: 25.1um +/- 0.7um, sigma = 1.7um, 6.8% CV

    Analyze wide size range materials through laser diffraction or other methods with Thermo Scientific™ Duke Standards™ 2000 Series Uniform Polymer Particles, NIST™ traceable polystyrene DVB particles with wider size distributions that mimic real world particles and work better on laser diffraction-type instruments. Particles meet the need for NIST traceable size standards that have slightly wider distributions than our monodisperse 3000/4000 series size standards. The wider distribution provides light scatter across a range of detectors, resulting in a more repeatable measurement.


    • Material is composed of polystyrene cross-linked with divinylbenzene, giving the particle good durability and chemical stability
    • Density of the polymer is 1.05g/cm3 and the index of refraction is 1.59 at 589nm (25°C)
    • Particles are packaged as an aqueous suspension in 15mL dropper-tipped vials
    • Excellent for use with any application that requires a NIST traceable size standard with a very narrow standard deviation

  • Description & Specifications

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