TU Delft: Delft researchers unmask millions of unsafe face masks

In March 2020, Delft researchers Tim Horeman, John van den Dobbelsteen and Bart van Straten, in collaboration with Greencycl, developed a method to sterilise face masks for reuse. Their method also proved to be a good way to check imported masks. It wasn’t long before the PFE test became the unintended standard for Dutch hospitals, which required providers to have this test performed.

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