Kit contains 1ml of dyed ~1.0µm monodisperse polystyrene microspheres (2.5% solids in water) for each of these colors: red, blue, yellow, violet, and unlabeled.

Kit contains 5ml of blue dyed monodisperse polystyrene microspheres (2.5% solids in water) for each of these nominal size: 0.2µm, 0.5µm, 1.0µm and 3.0µm.

Kit contains 1ml of dyed and flourescent ~1.0µm monodisperse polystyrene microspheres (2.5% solids in water) for each of these colors: red, blue, yellow, violet, and Fluoresbrite® YG, BB, YO, PC Red, and unlabeled.