Answer
May 26, 2020 - 05:13 AM
The general recommended wearing time for an ASTM-certified SFM is four hours according to:
https://www.ncbi.nlm.nih.gov/pmc/arti...
Please note that the Dukal mask is currently not available for sale. ETA is July 15th, 2020.
The only PPE products we currently have available are listed at:
https://www.medequipdepot.com/search?...
Thank you.