By The Nation
The department’s director-general, Dr Opart Karnkawinpong, said on Thursday (March 12) that the key quality for face mask fabric is it should be able to block small particles, prevent absorption of liquid aerosols and be reusable.
The top three fabrics that possess all characteristics are cotton, nanofabric and muslin, which can block small particles almost identical to the medical face mask.
Dr Opart said that of the three choices, muslin was the most suitable for homemade face masks. He, however, warned that the important thing was to make the least contact with the face to prevent contracting the virus.