9000-Uniform Glass Microspheres

These Glass Particle Size Standards are used as NIST traceable calibrants or controls for instruments requiring a higher density and more contrast to incident radiation than that provided by the polymer microspheres. Due to their very narrow size distributions and low number of spherical imperfections this product line is also ideally suited for use as spacers
where uniform bond line thickness is a precondition.Diameters of 2 to 20 µm are made of borosilicate glass. They have fewer spherical imperfections and inclusions than other glass microspheres. They also have better mechanical and thermal stability. Diameters of 30 to 2000 µm are made of soda lime glass which has trace amounts of metallic elements. This makes them easily detectable by non-dispersive X-ray methods and improves their contrast and reflectivity in optical
ultrasonic and electron beam detection methods. Spacers In order to obtain uniform bond line thicknesses
glass microspheres are mixed with glues. For the most exacting applications
for instance in the semiconductor industry
it is imperative that the size distribution is very narrow
that there is a low percentage of broken spheres and outliers. Our 9000 series Glass Microspheres has exactly those characteristics. The microspheres have been processed to remove most of the non-spherical and broken particles
assuring a high percentage of round spheres.Product specifications: Duke Standards
available sizes nominal diameter: Glass Borosilicate 2µm- 20µm. and Soda Lime Glass 30 – 2000 µm
Color: White
Application: Narrow Size Standard Deviation Applications
Particle Density: 2.4 to 2.6g/cm%B3
Refractive Index: 1.52 at 589nm 25%B0C
Shelf Life: Minimum of 24 months
Unit: 1 gram.