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Thermo Scientific™ ChromoSphere™-T Certified Size Standards


Achieve high visual contrast with Thermo Scientific™ ChromoSphere™-T Certified Size Standards, colored polymer microspheres with NIST™-traceable diameters.

Manufacturer: thermo scientific™  BK050T

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Catalog No. 09980114

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Description & Specifications

Specifications

Additive May contain trace amount of dispersant
Description Designed for use as reference or calibration materials in applications where high contrast is required.
Diameter (Metric) 49.1μm ± 1.3μm
Diameter (Metric) Particle 49.1 ± 1.3µm
Includes Certificate of Calibration and Traceability to NIST
Material Black dye dry polystyrene (DVB) microspheres
Particle Density 1.05g/cm³
Quantity 1g
Refractive Index 1.59 at 589nm (25°C)
Size Distribution s = 3.6µm, 7.3% CV
Stability Product stable for a minimum of 24 months
Storage Requirements Store at room temperature in a dry area. Store upright and keep bottle tightly sealed. Respiratory protection from dust is recommended.
Certifications/Compliance Certificate of Calibration and Traceability to NIST
Type Size Standard Particles
For Use With (Application) Cleaning Evaluation
Composition Polystyrene Divinlybenzene
Concentration 100% solids
Contents Dry dyed polystyrene (DVB) microspheres
Material Black dye dry polystyrene (DVB) microspheres

Achieve high visual contrast with Thermo Scientific™ ChromoSphere™-T Certified Size Standards, colored polymer microspheres with NIST™-traceable diameters. These reference and calibration materials are used in the testing of filtration systems, vial cleaning evaluations, contamination control studies and calibration of injection devices.

ChromoSphere-T Size Standards were developed for use as reference or calibration materials in applications where a high visual contrast is desired. The product line consists of a large assortment of uniform particle sizes between 50 and 500 microns in either red or black color.

  • Internally dyed with deeply colored red or black dyes, resulting in very high contrast and visibility relative to most background materials
  • Mean diameters traceable to the standard meter through the National Institute of Standards and Technology (NIST)
  • Calibrated by optical microscopy
  • Made from cross-linked polystyrene divinylbenzene (PS-DVB) copolymer
  • Available as dry powders
  • Easily dispersed in aqueous media with the aid of a small amount of surfactant or in lower alcohols, such as methanol or ethanol
  • Minimal dye extraction when particles are suspended in pure alcohols
Note:
  • Other organic solvents, such as ethers or chlorinated hydrocarbons, should be avoided because they will swell the particles and completely extract the dye.