National Institute for Occupational Safety and Health

“ PREPARATION OF INTERNAL CAPSULES BEFORE SAMPLING:
Equilibrate the PVC filter capsules in an environmentally controlled weighing area or chamber for at least 24 hours.
NOTE: An environmentally controlled chamber is desirable, but not required. Place backup pads in filter cassette bottom sections. Weigh the filter capsules in an environmentally controlled area or chamber. Record the internal capsule tare weight, W1 (mg) . Zero the balance before each weighing. Handle the filter capsule with forceps. Pass the internal capsule over an antistatic radiation source. ”

“ NIOSH [2014] . Backup Data Report-NIOSH 0501 and 5100. By O’Connor SP, O’Connor PF, Feng HA, Ashley K. Cincinnati, OH: U.S. Department of Health and Human Services, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health. [1] .
[5] NIOSH [2015] . Carbon black: Method 5100. In: Ashley KE, O’Connor PF, eds. NIOSH manual of analytical methods. 5th ed. Cincinnati, OH: U.S. Department of Health and Human Services, Centers
for Disease Control and Prevention, National Institute for Occupational Safety and Health, DHHS (NIOSH) Publication No. ”