>>509066374"We expected the opposite result," PhD student Iseline Chaib, who conducted the research, told AFP.
"We then noticed that in the glass, the particles emerging from the samples were the same shape, colour and polymer composition – so therefore the same plastic – as the paint on the outside of the caps that seal the glass bottles," she said.
The paint on the caps also had "tiny scratches, invisible to the naked eye, probably due to friction between the caps when there were stored," the agency said in a statement.
This could then "release particles onto the surface of the caps", it added.
But drink manufacturers could easily reduce the amount of microplastics shed by bottle caps, it added.
The agency tested a cleaning method involving blowing the caps with air, then rinsing them with water and alcohol, which reduced contamination by 60 percent.
https://www.sciencealert.com/glass-bottles-actually-contain-more-microplastics-scientists-find