Polystyrene beads from Nanocs have narrow size distribution and rich functionalities. We provides various fluorescently labeled polystyrene beads incuding coumarins, fluoresceins (FITC, FAM), Rhodamines (Rhodamine B, Rhodamine 6G, Rhodamine 101, etc.), Alexa Fluor, Cyanine dyes (Cy3, Cy5, Cy5.5, Cy7, etc.). We also offer various chemically functionalized polystyrene beads includine amines, carboxyls, azides, DBCO, etc.