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This series of microspheres has a slightly wider distribution than the monodisperse microsphere size standards.

This series of Silica particle size standards is designed for applications requiring monodisperse inorganic spheres.

Glass microspheres can be used in any application that requires a NIST traceable size standard with a narrow size distribution, and where sample conditions may not be suitable for polystyrene spheres.

A silicon test specimen made of single crystal silicon of overall dimensions 5 x 5mm and is 0.5mm thick. Special prices valid while stocks last. 

These highly uniform polystyrene spheres are calibrated by NIST standardised methods which include photon correlation spectroscopy, transmission electron microscopy and light microscopy.