Nke a bụ igwe mkpuchi ihu akpaka nke a na-ejikarị eme ihe mkpuchi ihu. Ọ na-eji teknụzụ ultrasonic na-agbado 3 ruo 6 akwa akwa akwa na-abụghị nke a na-akparaghị ókè, akwa agbaze agbaze, carbon na-arụ ọrụ na ihe nzacha, akwa ndị na-adịghị akwa ákwà, ọ nwere ike ịmepụta n95, kn95, n90 masks.