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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
Certifications/Compliance Certificate of Calibration and Traceability to NIST
Composition Polystyrene Divinlybenzene
Concentration 100% solids
Contents Dry dyed polystyrene (DVB) microspheres
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.
Type Size Standard Particles
For Use With (Application) Cleaning Evaluation

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.