NIST traceable ChromoSphere-T- polymer beads are internally and deeply dyed with intense red or black dyes that provide very high
contrast and visibility relative to most background materials.

Available as dry powders, they can be easily suspended in aqueous media with the aid of a small amount of surfactant or in lower alcohols such as methanol or ethanol.

Note: Some dye extraction will occur when the beads are suspended in pure alcohols, but it will be minimal. Other organic solvents, such as ethers or chlorinated hydrocarbons, should be avoided because they will swell the beads and completely extract the dye.