Standard Media for Particle Size and Number‐Density Calibrations in single, multiple and dependent scattering

Abstract

Two kinds of standard media for particle size and number‐density measurements and calibration are described. Although the main concern is multiple scattering situations, they might also be useful for single and dependent scattering. One medium is made of particles embedded in a solid polymer matrix and the other of particles embedded in a gel. Transmittance measurements at two wavelengths (visible and far‐infrared) are used to exemplify the use of these media.