Technology

Particle Counter Technology Developments and Improvements

By Thomas Pietrykowski & John Mitchell

Particles Monitoring Measurements Analytics

Download Full Article

Abstract

For approximately 4 decades, liquid optical particle counters (OPC) have been built around six main components: a single wavelength laser, beam shaping optics, a measurement region, collection optics, a photo-detector, and an analog-to-digital converter. Over the years, advancements in geometry, optics, and detector design have pushed the limits of detection down to 50 nanometers (nm). However, current instrumentation can monitor only a small percentage of real world particles at this size. A new digital particle measurement technologya uses a high density, two-dimensional array of high efficiency detector elements. This technology has detection limits down to 40 nm, and could someday reach 30 nm. There are many ind

Log in or Subscribe to Access the Full Article

To read or download full-length articles you need a subscription to Ultrapure. Please log in or subscribe below.

Advertisement

Advertisement