Duke Standards, Nominal Diameter: 40 µm, Uniform Polystyrene DVB Microspheres, NIST traceable, 1% solids, Color: White or Colorless, Application: Particle size instrument calibration, Particle Density: 1.05g/cm³, Refractive Index: 1.59 at 589nm (25©C), Shelf Life: Minimum of 24 months, Unit: 15 mL
2040A