Army testing masks in France before production скачать в хорошем качестве

Army testing masks in France before production

(6 May 2020) Under normal circumstances France's General Armament Directorate (DGA) would be buying up weapons systems for its military, but during the coronavirus pandemic this government department has found itself doing a more humble but equally important task: testing out face masks. It's become serious business for public safety and the DGA currently tests around 80 masks daily, sent in by French companies hopeful that the agency will give them a stamp of approval. "What the DGA tests show is a guarantee on a quality of filtration of the masks against the fine particles example of small droplets which are not visible to the naked eye," said Brigadier General Raymond Levet, during an interview with the Associated Press. "(We can) prove that the fabric has the right properties for filtering particles," he added. The first stage of the testing is on a mannequin, where experts touch the face and nose to check if it fits correctly, while, in a second stage a machine shoots air into the mask to see its level of filtration.   The material, that is usually cotton, is then transformed into a circle that passes into a "tulip" machine that shoots pulverized corn to see how fine particles enter the mask. A 70%-90% particle filtration is what the DGA has deemed the minimum standard. The DGA says that around a fifth are validated as safe to wear as protection against the transmission and dissemination of COVID-19.   So far, 3,600 masks have been tested – but the agency stresses that their approval is not necessarily enough for the masks to be put on sale. Find out more about AP Archive: http://www.aparchive.com/HowWeWork Twitter:   / ap_archive   Facebook:   / aparchives   ​​ Instagram:   / apnews   You can license this story through AP Archive: http://www.aparchive.com/metadata/you...