18372 Redmond Way
Redmond, WA 98052
John Carroll manages the chemistry laboratory at J.S. Held, Redmond and has more than 20 years’ experience in laboratory and field method development, research, and testing, using an extensive range of instrumentation. His project experience includes expert technical support and both development and utilization of chemical and instrumental analysis techniques. Capabilities at GT Engineering’s chemistry laboratory include analysis of polymers, fibers, and hydrocarbons by a variety of advanced techniques, such as infrared spectrometry (FTIR), differential scanning calorimetry (DSC), high-performance liquid chromatography (HPLC) as well as standard wet chemistry methodologies.
Previously, John worked in industry as an Associate Scientist at HaloSource where he led investigations into biopolymer manufacturing and material defects and helped bring medical and chemical products to market often within FDA, EPA, and state ecology regulatory environments.
For many years John was a member of the Fiber and Polymer Group at the University of Washington where he conducted forensic polymer and plastics analyses and worked on projects dealing with human exposure to inorganic and organic contaminants including asbestos and formaldehyde for industry, insurance companies, and law firms.
John has one patent and three patents pending, 14 scientific publications, has presented scholarly works in the US, Canada, Italy, Kenya, and Cuba, and has provided forensic testimony in court and depositions.