Ryan Keefer
Senior Technical Sales Specialist and Particle Characterization Chemist V
Ryan Keefer is a Senior Technical Sales Specialist and Particle Characterization Chemist V at PTL. Mr. Keefer joined PTL in 2012 and has grown into one of PTL’s most seasoned technical resources. He possesses a rare combination of in-depth scientific expertise and client‑focused problem‑solving skills.
Mr. Keefer partners directly with clients to understand their complex material challenges and translate them into effective analytical strategies. His extensive background in particle characterization—particularly in nanotechnology, nano‑characterization, and particle speciation—enables him to advise customers on effective solutions for their needs. Ryan excels at bridging the gap between advanced technical insights and practical, solution‑oriented outcomes for clients across a wide range of industries.
Mr. Keefer applies more than a decade of laboratory experience to support intricate projects, mentor PTL staff, and ensure the delivery of high‑quality, meaningful analytical results.
Mr. Keefer earned bachelor’s degrees in Biochemistry and Education from Western Illinois University and the University of Illinois, and holds a master’s degree in Chemistry.