// Definition
PFAS (per- and polyfluoroalkyl substances) that are ubiquitous environmental contaminants and a concern in cannabis processing, particularly regarding parchment paper, silicone mats, and other materials used in rosin production.
// From the Episode
Collin Palmer raised the topic of forever chemicals from bleached parchment paper. Dr. Mark corrected him - PFAS contamination comes from historical industrial use (3M, DuPont coating Big Mac wrappers, Stainmaster carpets) not from the bleaching process. They are nearly ubiquitous and indestructible. Fletcher (SPEAKER_12) noted silicone coatings may also contaminate rosin and called for parts-per-million/billion testing. Bubbleman asked why regulatory bodies don't mandate testing for these contaminants.