However, it is about bottle caps that are designed to go exclusively on glass bottles. I guess the headline could have read “Bottled drinks with caps that are designed to go on glass bottles ... ” That doesn’t seem like it would be misleading; it would also be less ambiguous than “bottle caps” which could suggest any cap to any bottle. (And it would be a rather obtuse way to phrase it.)
Regardless, the headline seems to be literally accurate. Microplastics are indeed found in larger quantities in glass-bottled drinks than in plastic-bottled drinks. Those microplastics in glass-bottled drinks come from the paint on the designed-for-glass-bottles bottle cap.
Regardless, the headline seems to be literally accurate. Microplastics are indeed found in larger quantities in glass-bottled drinks than in plastic-bottled drinks. Those microplastics in glass-bottled drinks come from the paint on the designed-for-glass-bottles bottle cap.