Work Item
ASTM WK84067

New Test Method for Determining Total Outward Leakage for Barrier Face Coverings

1. Scope

This work item will use ongoing and proposed research to evaluate methods that quantitative the reduction of unfiltered exhalation passing through and around the face covering during normal conditions of use.


total outward leakage; source control


Typically, respirators are designed for respiratory protection and surgical masks are designed to shield a patient from respiratory droplets emitted by medical staff. More recently, all types of masks have been used as a source control strategy to reduce the spread of COVID-19. To begin to assess the amount of source control afforded by masks, a standard test method is needed to quantify the total outward leakage of particles.

The title and scope are in draft form and are under development within this ASTM Committee.


Developed by Subcommittee: F23.65

Committee: F23

Staff Manager: Mary Mikolajewski

Work Item Status

Date Initiated: 11-02-2022

Technical Contact: Lee Portnoff

Item: 000