Well, that was shocking news, but on reflection, not, because micro plastics pollute our entire planet. Thankfully, bees' natural housekeeping almost prevents the contamination of honey:
Most of the MF* (micro fibres)
were accumulated in wax showing that honey remains as a safe food.
According to the google, a micro fibre is
synthetic fiber finer than one denier or decitex/thread, having a diameter of less than ten micrometers and that
Diatomaceous frustules have a variety of particle sizes, averaging from 3 μm to 200 μm and sometimes up to 1 mm.
MF diameter less than 10 micrometres, DE 3-200 micrometres, but what size of DE would be necessary to remove MF?
If anyone is in doubt of the gory detail of industrial honey processing, this
patent application for DE filtration will keep you on the edge of your seat. At the end the inventors claim (vaguely, with the intent to reassure) that
no loss or modification of flavor can be detected in the filtered honey, as compared with the original honey, and they deliberately avoid mention of the loss of pollen, minerals, vitamins and other beneficial attributes.