Does the PORTACOUNT work with half-face and full-face respirators?
Yes. It will work equally well with either type of respirator. Keep in mind that the larger the internal volume of the respirator the longer the test subject should wear it before testing. This allows the ambient air particles that were trapped in the mask during donning to be purged out. Half masks take less than 30 seconds of breathing to purge. Full face masks may take over one minute.
