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“We’ve seen fluoro groups in insecticides, but I would not call those PFAS,” says Graham Peaslee, a professor of physics at the University of Notre Dame.

In Vermont, the VPA Nordic High School Coaches Association decided to stop using all fluorinated glide waxes this season and in Maine high fluoro waxes were banned at the state championship.

Wax technicians, coaches and athletes have been heating the so-called fluoro waxes with irons on the base of skis and then scraping scraping it off for years - often in wax rooms and trailers before a race.

“I think the goal of Nordic coaches is to eliminate the fluoro waxes and in the end of it to have uniform wax for every race, for every skier which will in that sense it will probably be more just because it will be human performance,” Rokos said.

The International Ski Federation says it’s looking at many options for testing for the presence of the fluoro waxes and has not yet determined what will be the best approach.