Sheri Heldstab

Sheri Heldstab is the QA/QC Officer and Technical Director at Chester LabNet. For the past 27 years, she has worked for Chester LabNet, specializing in inorganic air quality analyses. She is a member of TNI and is currently the Vice Chair of the Stationary Source Audit Sample Expert Committee. She is also a member of ASTM Committee D22, sitting on the subcommittee for Ambient Atmospheres and Source Emissions. She graduated from University of Oregon with a Bachelor’s degree in what would later be known as Molecular Biology and Biochemistry.

Contact Information:; 503.624.2183