Description
Diameter (Metric): 400 μm
Color: Red
Size Distribution: s = 18 µm, 4.4% CV
Unit Size: Each
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 alcoholsNote:
• Other organic solvents, such as ethers or chlorinated hydrocarbons, should be avoided because they will swell the particles and completely extract the dye.
