Particle Size Standards

A wide range of certified particle size standards for validating and calibrating particle sizing instruments or methods in order to comply with ISO
GMP
GLP and other international standards. They are traceable to certified reference materials from the National Institute of Standards and Technology (NIST) and other international standard organisations through an unbroken chain of measurement leading back to the standard meter. They are available as uniform spheres of polymer
glass or silica in a range of discrete sizes from 20 nanometers (nm) to 2000 micrometers (µm or microns). Spheres are used instead of irregularly shaped particles to minimize shape effects on the response of analytical systems.