Standard Reference Materials: Description of the SRM 1965 Microsphere Slide

摘要

The manual describes a new Standard Reference Material (SRM 1965). The SRM consists of two single-layer groupings of contacting monosize 10-micrometer polystyrene spheres that have been permanently sealed in an air chamber on a microscope slide. One sphere grouping consists of hexagonally ordered arrays, while the other grouping is unordered. The diameter distribution of the sphere material (SRM 1960), which was made under microgravity conditions on a Space Shuttle, is accurately known. SRM 1965 has a dual function: supporting measurements involving microscopy and supporting teachings and experiments in micrometrology. The manual describes how to measure microscope magnification and image distortion at levels below 0.5% and describes micrometrology experiments at the 0.05 micrometer level.