Ezy-Cal Count Precision Standards, Nominal Diameter: 50 µm, Uniform Polystyrene, 2000 #/mL, Color: White or Colorless, Application: Particle count instrument calibration, Particle Density: 1.05g/cm%B3, Refractive Index: 1.59 at 589nm (25©C), Shelf Life: Minimum of 3 months, Unit: 100 mL
6050