02-21-2022, 04:23 AM
Obie: The CDC document you want is here:
https://www.cdc.gov/coronavirus/2019-nco...index.html
"NIOSH-certified reusable elastomeric particulate respirators provide at least the same level of protection as N95 FFRs, and some types of elastomeric respirators can offer higher assigned protection factors than N95 FFRs." (FFR=disposable half mask filtering facepiece respirators aka disposable N95 masks)
"Filters are available in three efficiency levels – 95, 99, 100. Thus, a wide selection is potentially available for use to augment the overall supply of respirators in healthcare settings. The half mask or facepiece type respirator with N-Series 95% efficiency level filters (N-95) has been determined to provide adequate protection in combination with other healthcare practice interventions such as hand washing, isolation, and spatial distance for the risks associated with the transmission of tuberculosis, influenza, and novel coronaviruses."
For the exhalation valve there is a separate filter available for 6000 series (https://www.3m.com/3M/en_US/p/d/v101254496/)
that 3m specifically designed for to prevent the spread of COVID:
https://www.medicaldesignandoutsourcing....shortages/
2 years in and still arguing over masks...
https://www.cdc.gov/coronavirus/2019-nco...index.html
"NIOSH-certified reusable elastomeric particulate respirators provide at least the same level of protection as N95 FFRs, and some types of elastomeric respirators can offer higher assigned protection factors than N95 FFRs." (FFR=disposable half mask filtering facepiece respirators aka disposable N95 masks)
"Filters are available in three efficiency levels – 95, 99, 100. Thus, a wide selection is potentially available for use to augment the overall supply of respirators in healthcare settings. The half mask or facepiece type respirator with N-Series 95% efficiency level filters (N-95) has been determined to provide adequate protection in combination with other healthcare practice interventions such as hand washing, isolation, and spatial distance for the risks associated with the transmission of tuberculosis, influenza, and novel coronaviruses."
For the exhalation valve there is a separate filter available for 6000 series (https://www.3m.com/3M/en_US/p/d/v101254496/)
that 3m specifically designed for to prevent the spread of COVID:
https://www.medicaldesignandoutsourcing....shortages/
2 years in and still arguing over masks...