// Definition
A hash refinement technique that exploits differences in electrical charge between trichome heads and plant contaminant. When materials are rubbed against parchment paper or polyester screens, static charges build up differently on resin versus plant matter, causing them to behave differently and enabling additional purification beyond mechanical screening.
// From the Episode
Tony Verzura gave a live demonstration showing how pressing hash between parchment paper transfers electrons to the resin, making it negatively charged and attracted to a nearby finger. Mark Scialdone clarified this is a bulk particle phenomenon similar to rubbing a balloon on your head, and noted that industrial manufacturers like Nabisco use electrostatic separation to remove particulates from baked goods.