Total Inward Leakage (TIL) for Respiratory Protective Devices

Principal Investigator(s):  View help for Principal Investigator(s) National Institute of Occupational Safety and Health

Version:  View help for Version V2

Name File Type Size Last Modified
  rd-1011-2019-1 06/19/2025 06:14:PM

Project Citation: 

National Institute of Occupational Safety and Health. Total Inward Leakage (TIL) for Respiratory Protective Devices. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2025-06-23. https://doi.org/10.3886/E233594V2

Project Description

Project Title:  View help for Project Title Total Inward Leakage (TIL) for Respiratory Protective Devices
Summary:  View help for Summary
Total inward leakage (TIL) is an estimate of the performance of a respirator, which is measured as the leakage of contaminants through the filter media and through the faceseal interface and exhalation valve of respiratory protective devices under laboratory conditions. Several test agents have been used to measure TIL in different countries. There is a lack of consensus on the most appropriate test method to measure TIL. The International Organization for Standardization (ISO) developed a standard (ISO, 2014) on the comparison of TIL measurement using sodium chloride (NaCl) and corn oil aerosols, and sulfur hexafluoride gas. A comparison of the TIL values between different methods will enable the selection of a relatively suitable method for measuring TIL. NIOSH’s National Personal Protective Technology Laboratory (NPPTL) investigated the TIL values for respirators worn by test subjects exposed to NaCl and corn oil aerosols in two aerosol chambers side-by-side. Four air-purifying respirator categories, made
Original Distribution URL:  View help for Original Distribution URL https://data.cdc.gov/National-Institute-for-Occupational-Safety-and-Hea/Total-Inward-Leakage-TIL-for-Respiratory-Protectiv/4ems-va7k/about_data

Scope of Project

Subject Terms:  View help for Subject Terms NIOSH-rescue


Related Publications

Download this project

Published Versions

V2 [2025-06-23]

V1 [2025-06-19]

Export Metadata

Dublin Core

DDI 2.5

Report a Problem

Found a serious problem with the data, such as disclosure risk or copyrighted content? Let us know.

This material is distributed exactly as received from the data depositor. ICPSR has not reviewed, checked, or processed this material. For additional information about the study, please contact the investigator(s) directly. If you have questions about the accessibility of materials distributed by ICPSR or require further assistance, please visit ICPSR's Accessibility Center.