About Us

About Us

PSS was founded over 35 years ago when Dr. David Nicoli invented his unique DLS algorithm that remains unbeatable in the ability to resolve multiple peaks in the submicron region. The Nicomp DLS system has been improved and refined through the years including unique capabilities including auto-dilution, desktop multi-angle goniometer, PALS analysis for zeta potential and an autosampler for high sample throughput applications.

In January 2018 PSS was acquired by Entegris to expand the value of its product portfolio for advanced-node manufacturers. This acquisition reflects Entegris' value creation strategy by leveraging its global technology platform and customer relationships.

Entegris is a leader in specialty chemicals and advanced materials solutions for the microelectronics industry and other high-tech industries.  Entegris is ISO 9001 certified and has manufacturing, customer service and/or research facilities in the United States, China, France, Germany, Israel, Japan, Malaysia, Singapore, South Korea and Taiwan.

Additional information can be found at www.entegris.com

The AccuSizer series incorporating the single particle optical sizing (SPOS)

The AccuSizer series incorporating the single particle optical sizing (SPOS) technique is built upon inventions and patents in the fields of optics and auto-dilution fluidics. The AccuSizer systems are both liquid particle counters and high resolution particle size analyzers. Unique optical developments include dual extinction and scattering detectors in a single sensor and the focused beam FX and FX Nano sensors that detect smaller particles at higher concentrations. Single exponential dilution and dual stage dilution fluids allow for analysis over a broad range of sample concentrations.

The most recent AccuSizer advancements have gone into creating the AccuSizer Mini online CMP slurry monitor – the most sensitive LPC monitor on the market.

PSS maintains two active R&D and manufacturing facilities in Santa Barbara, CA and Port Richey, FL.


Call at (727) 846-0866 or contact us today. Let us show you how our Particle Sizing Systems Products can fill your needs.Thank you.