For over 35 years Particle Sizing Systems (PSS) has been committed to helping customers find solutions to their particle sizing problems. We offer products with unique capabilities that can size particles from single digit nanoparticles to particles that are thousands of microns in diameter. Whether you need a particle size distribution or to find that needle in a hay stack, our team of engineers and sales staff are available to provide the product knowledge and scientific expertise necessary to solve your sizing issues. In January 2018 PSS was acquired by Entegris, Inc. Now backed by a leading multi-national company with extensive experience in the semiconductor and life science industries, PSS is stronger than ever and able to provide enhanced solutions and support to our customers.