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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.
Brand: Thermo Scientific™ BK400T
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Description
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
- Other organic solvents, such as ethers or chlorinated hydrocarbons, should be avoided because they will swell the particles and completely extract the dye.
Specifications
| May contain trace amount of dispersant | |
| 100% solids | |
| Dry dyed polystyrene (DVB) microspheres | |
| Black | |
| Polystyrene Divinylbenzene (PS-DVB) | |
| Certificate of Calibration and Traceability to NIST | |
| 1 g | |
| s = 18µm, 4.8% CV | |
| 400 μm |
| Certificate of Calibration and Traceability to NIST | |
| Store at room temperature in a dry area. Store upright and keep bottle tightly sealed. Respiratory protection from dust is recommended. | |
| Designed for use as reference or calibration materials in applications where high contrast is required. | |
| Cleaning Evaluation, High Contrast Reference and Calibration | |
| Size Standard Particles | |
| 1.05g/cm³ | |
| 1.59 at 589nm (25°C) | |
| Product stable for a minimum of 24 months |