The Direction Générale de l'Armement (DGA), the French armament procurement agency, announced on its website on 23 March that its Maîtrise NRBC (nuclear, radiological, biological, and chemical management) centre has been tasked with measuring the effectiveness of protective face masks in filtering particles provided by industry, mainly textile manufacturers.
The mask being tested is put on a mannequin head that is placed in a box full of salt particles, the DGA explained. The head simulates human breathing and by comparing the density of particles present in the mannequin's mouth with those in the box, it possible to calculate the percentage of particles stopped, allowing the filtering effectiveness of each mask to be assessed, according to the agency.
The DGA received 700 masks for testing on 19 March and the results are being communicated to the companies that provided them.
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