N1: Research Roundup Exposure Assessment/Aerosols and Chemicals

Dilpreet Singh Moderator
Exponent
Oakland, CA 
USA
 
Qian Zhang Author
UL Research Institutes' Chemical Insights
Marietta, GA 
 
John Breskey, Ph.D., CIH, CSP Author
Thermo Fisher Scientific
Minneapolis, MN 
USA
 
Wed, 6/3: 1:00 PM - 2:00 PM CDT
Research Roundups 
Ernest N. Morial New Orleans Convention Center 
Room: 293 
CM Credit Hours:

Content Level

Intermediate
Advanced

Core Competencies

Chemical Hazards
Exposure Assessment
Indoor Air Quality
Risk Management

Keywords

Aerosol and airborne particulate monitoring

Session Availability

In-person
OnDemand
Virtual

Targeted Audience

Practitioner
Professional

Transfer of Knowledge

Case Studies
Lecture Only

Presentations

N1a: Chemical Emissions and Inhalation Risks Associated with Resin 3D Printing in Dental Fields

Resin 3D printing has been widely used in dental fields including dental schools and clinic offices. However, the liquid resins may contain irritating or sensitizing components that can off gas during normal use or even at room conditions. This may pose inhalation risks for users who handle resins daily as well as bystanders in the room during normal work hours.

This study developed a method to screen for volatile organic compound (VOC) emissions from commonly used dental resins and assessed the potential inhalation risks associated with these resins. 

Co-Authors

M. Wilson, UL Research Institutes, Marietta, GA, USA 

Acknowledgements & References

I. Sanchez, Nova Southeastern University, Davie, FL, USA, provided resin samples
B. Welmaker, Nova Southeastern University, Davie, FL, USA, initiated the study
C. Bell-Huff, UL Research Institutes, Marietta, GA, USA, initiated the study 

Author

Qian Zhang, UL Research Institutes' Chemical Insights Marietta, GA 

Co-Presenter

Mark Wilson, Underwriters Laboratories Research Institute's Chemical Insights Marietta, GA 

N1b: Validating Ventilated Balance Enclosure Containment Performance

In an era of increasingly potent compounds and leaner lab operations, can your engineering controls keep up? This presentation dives into a real-world containment validation study conducted in a high-throughput pharmaceutical contract research lab-where hundreds of analysts rely on ventilated balance enclosures (VBEs) to safely handle active pharmaceutical ingredients.

Using a task-based study design with a surrogate compound and multiple operators, the team assessed airborne exposure under realistic lab conditions. The findings show statistically significant variability in exposure by operator and day, but all results remained well below the occupational exposure limit.

Learn how rules based performance criteria from ISPE were applied to confidently validate containment without relying on time weighted averages or excessive conservatism. If you're facing questions about PPE policy, engineering control effectiveness, or how to balance compliance with practical lab realities, this presentation will give you data-driven answers-and a blueprint for how to do it yourself. 

Co-Authors

none 

Acknowledgements & References

none 

Author

John Breskey, Ph.D., CIH, CSP, Thermo Fisher Scientific Minneapolis, MN 
USA