PFAS Sample Collection: State of the Science, Part 2

Why attend this webinar? PFAS sampling protocols can differ from conventional contaminant investigations, yet guidance remains inconsistent and sometimes contradictory. Sorting myth from science is essential for defensible data collection and avoiding costly resampling or data quality challenges.

What you'll learn:

Why PFAS Sampling is Different
Unlike petroleum hydrocarbons or chlorinated solvents, PFAS contamination sources surround us in field gear, personal care products, sampling equipment, and even what are supposed to be "PFAS-free" materials. Understand which exposure pathways create genuine contamination risk versus those driven by excessive caution.

The Fluoropolymer Controversy: PTFE and Sampling Equipment
Fluoropolymer components (PTFE, FEP) have been standard in groundwater sampling equipment for decades. Can these materials be used for PFAS sampling, or must everything be replaced? We'll review research findings on leaching potential, distinguish between different fluoropolymer types, and provide evidence-based equipment recommendations.

Navigating the Guidance Gap
EPA drinking water methods provide sampling protocols for potable water, but comprehensive guidance for environmental matrices remains limited. State agencies and professional organizations offer varying recommendations about appropriate procedures. We'll compare available guidance documents and identify consensus best practices.

Field Contamination Sources: Real Risks vs. Overreaction
Research studies have tested potential contamination from field clothing, sunscreen, food wrappers, sampling equipment, and decontamination procedures. Learn which sources can compromise sample integrity and which precautions provide minimal benefit.

Quality Control Strategies That Work
Effective PFAS sampling requires coordinated protocols between field teams and laboratories. We'll discuss field blanks, equipment rinsate blanks, trip blanks, and laboratory handling procedures that ensure data defensibility.

Best Practices Based on Current Science
Compile a practical sampling protocol based on peer-reviewed research, regulatory guidance, and real-world implementation. Understand what equipment modifications may be prudent, which field procedures prevent contamination, and how to document quality assurance measures. Learn how to stay current as sampling science advances.

Who should attend: Environmental consultants, field technicians, laboratory project managers, regulatory compliance staff, and anyone responsible for PFAS sampling program design or data quality review.

Airdate: Tuesday, January 27, 2026 - 1:30 PM ET
 
Length: 60 minutes 

Presenter: Taryn McKnight - Eurofins Environment Testing