Particle College Presenters

Mark Hallworth
Life Sciences

Senior GMP Scientist

Mark Hallworth is a globally recognized authority in pharmaceutical contamination control, specializing in the design, validation, and implementation of GMP-compliant environmental monitoring systems. With decades of experience, he has led more than 200 projects across cleanroom facilities, focusing on regulatory compliance, data integrity, and system performance. Mark has contributed to the development of particle counters for hazardous environments and 21 CFR Part 11–compliant software for batch release and test management. He has authored over 100 technical papers and contributed to leading industry publications and reference books. Mark frequently presents at international forums, including the Parenteral Drug Association (PDA) and ISPE, where he teaches best practices in cleanroom monitoring and GMP compliance. Additionally, Mark served on the ISO 14644-21 technical committee and received the IEST James Mildon Award for advancing knowledge in contamination control. His work continues to shape standards and practices across the global pharmaceutical and biotechnology industries.

Dan Rodier, Ph.D.
Electronics Division
Technology Development Manager

Email: drodier@PMEASURING.com

Dr. Rodier has a Ph.D. in analytical chemistry from the University of Colorado and has over 23 years of experience developing and implementing technologies and strategies to measure airborne molecular species and particulate contamination. Dr. Rodier has four patents for microcontamination monitoring technologies. He has worked with customers across Asia, Europe, and North America to implement monitoring programs in the semiconductor, aerospace, hard disk drive, and flat panel display industries.

Paul Hartigan
Life Sciences Division
Global Product Line Manager

Email: phartigan@PMEASURING.com

Paul Hartigan has over a decade of experience in advancing contamination monitoring technologies for cleanroom environments. He has led product development for aerosol particle counters, liquid particle counters, microbial air samplers, and environmental monitoring systems—both hardware and software—used in GMP-regulated pharmaceutical and biotechnology manufacturing. Paul holds a B.S. in Electrical Engineering and a Master’s degree in Business. He has authored numerous technical papers on contamination control and has presented globally at industry events and trade organizations, educating professionals on best practices in environmental monitoring and data integrity. Paul applies his expertise to support innovation in cleanroom monitoring solutions. He is the Global Product Line Manager for Instruments and Sensors at Particle Measuring Systems, a recognized global authority in contamination monitoring for the pharmaceutical, life sciences, and microelectronics industries.

John Davis
Electronics Division
Vice President & GM

Email: jdavis@PMEASURING.com

Mr. Davis leads a global team of applications engineers to help our customers integrate PMS® systems into their processes to solve their various application needs. Mr. Davis comes to Particle Measuring Systems with a background in thin film processing for the storage, display, and optics industries.

Rick Duskey
Electronics Division
Associate Product Manager

Email: rduskey@PMEASURING.com

Mr. Duskey is currently a Software/Systems and select Liquids Product Manager in the Electronics division with PMS®. Rick transitioned from his technical role in the military 8 years ago to a Service Technician position at PMS® , working on a wide array of products. He has worn many hats at PMS and successfully covered positions in Service, Technical Support, Sales support, Metrology, Life Science and Electronics Product Management . Rick is a graduate of the University of Colorado Boulder Leeds School of Business Executive MBA program. In his spare time, he is the State of Colorado Director of the Veteran Golf Association and enjoys spending time outdoors and with his family.

Willie Aiken
Electronics Division
Applications Engineer

Email: waiken@PMEASURING.com

Willie Aiken is a Liquids Application Engineer at Particle Measuring Systems and has been with the company for the past 21 years working in a variety of roles with a primary focus in liquid particle counting applications. Prior to PMS®, Willie worked in the photonics industry as an application engineer in laser diode technology and applications.

Amit Nag
Electronics Division
Product Line Manager

Email: anag@PMEASURING.com

Amit Nag serves as the Product Line Manager for Liquid Particle Counters in the Electronics Division. With over 20 years of diverse experience across multiple industries – including semiconductor, pharmaceutical, medical devices, and oil and energy – he has a proven track record in developing and launching new products, managing product life cycles, and conducting training on product technology and applications. At PMS, Amit oversees high-precision liquid particle counters designed for various process chemicals and ultrapure water. His diverse expertise ensures that customers receive advanced solutions for maintaining clean and compliant production environments.

Lexi Lake
Electronics Division
Applications Engineer

Email: llake@pmeasuring.com

Lexi Lake is an Applications Engineer with Particle Measuring Systems, serving as subject matter expert for aerosol, gas, and AMC contamination control and monitoring. Prior to this, Lexi was an Aerobiology Engineer working in Aerosol Science Research and Development validating the Aerobiology Testing Lab and designing new aerosol and microbial contamination monitoring products. Before joining Particle Measuring Systems, she designed and ran research experiments related to respiratory and airborne diseases and therapies. Lexi holds her Master of Science in Microbiology and Bachelor of Science in Biology.

Benton Hutchinson
Electronics Division
Product Line Manager

Email: bhutchinson@pmeasuring.com

Benton is a Product Line Manager in the Electronics Division, covering the aerosol, compressed gas, and airborne molecular contamination (AMC) products at Particle Measuring Systems. Before that, Benton was an Applications Engineer focusing on the AMC and aerosol products globally. He serves as a subject matter expert for both AMC and aerosol particles, specializing in their handling and mitigation in cleanroom environments. Benton holds a Bachelors and Masters degree in Chemical Engineering.

Ben Martinez
Electronics Division
Applications Engineer

Email: bmartinez@pmeasuring.com

Ben Martinez is currently a liquids applications engineer at Particle Measuring Systems. Previously, Ben worked as the line lead for the 20nm product line in manufacturing where he learned the alignment and calibration process for various instruments. Ben has a Bachelor of Sciences in Computational Physics from Regis University where he did research on the g-2 Experiment that measured the anomalous magnetic moment of the muon. Ben also completed his Master of Sciences in Mechanical Engineering from Colorado State University where he familiarized himself with complex laser systems designed to monitor chemical species in the atmosphere.

*Presenters may vary from course to course based on availability.