Duke Standards, Nominal Diameter:  280 µm,  Uniform Glass Microspheres Soda Lime Glass, Color: White,  Application: Narrow Size Standard Deviation Applications,  2.4 to 2.6g/cm³, 1.5,  1.52 at 589nm (25©C), Shelf Life: Minimum of 24 months, Unit: 1 gram
9280