// Definition
A food-grade nylon monofilament mesh used in rosin press bags, preferred over polyethylene because of its much higher decomposition temperature (around 400-500 degrees Fahrenheit versus 220-230 for polyethylene), reducing the risk of off-gassing and microplastic contamination during pressing.
// From the Episode
Bubbleman explained the critical distinction between nitex and polyethylene mesh for rosin bags. Polyethylene can begin off-gassing at temperatures as low as 220F, well within rosin pressing ranges, while nitex withstands nearly twice that temperature. Dr. Mark Scialdone confirmed nylon has a very high decomposition point. Multiple panelists discussed the risk of microplastic contamination from bag blowouts and off-gassing during extended presses.