Brochure | July 29, 2020

PSA Particle Size Analyzer Brochure

PSA 450x300

Particle size analysis by laser diffraction

Anton Paar’s PSA series incorporates more than fifty years of experience. The world's first laser diffraction particle size analyzer – the first-ever PSA – was invented in 1967. The three models PSA 990, PSA 1090, and PSA 1190 are designed to measure a wide range of particle sizes in liquid dispersions or dry powders.

The laser diffraction technique is an established method to measure particle sizes from the upper nanometer to the millimeter range. A laser beam is directed onto dispersed particles, then the laser light is diffracted by the particles, and the corresponding diffraction pattern is detected and evaluated. Anton Paar’s PSA instruments work with high-resolution detectors to provide accurate and reproducible measuring signals that are used to calculate particle size distributions based on the Fraunhofer and Mie theories. This guarantees full compliance with the ISO 13320 and USP <429> standards.

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