Metal bottle caps 'surprising' source of microplastic contamination, study finds

Glass bottles had highest levels of the substance compared with beer, water, wine and soft drinks, researchers found Metal bottle caps can be a significant source of microplastic contamination in beverages, a new peer-reviewed study by France's food safety agency finds. Researchers compared microplastic levels in beer, water, wine and soft drinks, and found the substance in all samples, but liquid in glass jars showed the highest levels. The surprising source of the contamination - a polyester-b...